Kamu tahu apa itu persamaan linear dan pertidaksamaan linear? Yuk, pelajari pengertian, bentuk umum, sifat, contoh, dan perbedaannya melalui artikel Matematika kelas 10 ini!
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Siang itu, Indra sedang tiduran sambil membaca buku komik kesukaannya di dalam kamar. Entah kenapa, suasana sangat hening siang itu. Dari dalam kamar, Indra mendengar suara langkah kaki misterius yang kian lama kian mendekat.
Tiba-tiba, pintu kamar terbuka dari luar dan sosok misterius itu muncul dari balik pintu.
“Aaahhh!” Indra berteriak kaget.
“Ngapain teriak-teriak ih! Kamu kira Mama hantu?”
Ternyata sosok misterius itu adalah Mama Indra.
“Mama sih, bikin kaget! Tiba-tiba buka pintu nggak ngomong-ngomong.”
“Hehe, iya soalnya Mama lagi buru-buru! Tolong beliin kolak pisang ya, Ndra. Bentarlagi temen-temen Mama mau dateng ke sini, nih. Mama masih sibuk nyiapin masakan.”
Indra pun bangkit dari kasur dan menghadap Mama, “Asiikk, hari ini makan kolak pisang! Oke siap, Ma!”
“Harganya berapa ya, Ndra? Mama lupa.”
“Seingetku sih, harganya 8 ribuan per porsi, Ma.”
“Ooohh 8 ribuan, kalau gitu…” Mama membuka dompetnya dan mengambil dua lembar uang dua puluh ribuan, “Nih, kamu beliin semuanya, ya.”
“Oke, Ma!”
Mama kembali ke dapur meninggalkan Indra yang masih kebingungan di kamar. Dalam hati, Indra bergumam,
“Kalau uangnya segini berarti dapetnya berapa porsi, ya?”
Hayo, kamu bisa tebak nggak, berapa porsi kolak pisang yang bisa Indra dapatkan? Nah, kejadian seperti ini tuh bisa kita selesaikan menggunakan persamaan linear, lho! Apa itu persamaan linear?
Persamaan linear adalah persamaan yang mengandung variabel berpangkat satu. Persamaan ini disebut juga dengan persamaan berderajat satu (persamaan linear satu variabel). Adapun bentuk umum dan sifat dari persamaan linear adalah seperti pada gambar berikut.
Sifat dan Bentuk Umum Persamaan Linear
Nah, cerita pembelian kolak pisang tadi bisa kita selesaikan dengan persamaan linear, nih. Caranya, kita anggap jumlah porsi kolak pisang sama dengan “x”. Lalu, karena Indra harus menghabiskan 40 ribu rupiah untuk membeli jumlah porsi kolak pisang yang belum diketahui dengan harga per porsinya adalah 8 ribu rupiah, maka persamaan linearnya adalah sebagai berikut:
8000 x = 40000
Kalau udah begini, langsung kita cari aja nilai x yang memenuhi persamaan tesebut, yaitu:
x = 40000 : 8000
x = 5
Jadi, jumlah porsi kolak pisang yang akan didapatkan Indra adalah 5 porsi. Paham, ya?
Baca Juga: Mengenal Vektor Bidang 2 Dimensi & Vektor Ruang 3 Dimensi
Itu tadi adalah salah satu contoh paling sederhana dari persamaan linear. Next, kita belajar sifat persamaan linear dengan menggunakan contoh persamaan kolak pisang tadi.
8000 x = 40000
Persamaan itu, tidak akan berubah apabila kita ganti menjadi, misalnya:
- 8000 x + 2000 = 40000 + 2000
- 8000 x – 2000 = 40000 – 2000
Dalam persamaan linear, penjumlahan dan pengurangan bilangan di kedua ruas tidak akan mengubah nilai persamaan tersebut. Artinya, persamaan kolak pisang awal, bernilai sama dengan persamaan 1 dan persamaan 2.
Hal ini juga berlaku apabila kita ganti menjadi, misalnya:
- 8000 x X 5 = 40000 X 5
- 8000 x : 5 = 40000 : 5
Sama dengan penjumlahan dan pengurangan, dalam persamaan linear, perkalian dan pembagian bilangan di kedua ruas juga tidak akan mengubah nilai persamaan tersebut. Artinya, persamaan kolak pisang awal, bernilai sama dengan persamaan a dan persamaan b. Inilah yang dimaksud dengan sifat persamaan linear.
Sebelum membeli kolak pisang, Indra mencuri waktu untuk berkeliling sebentar. Di tengah perjalanannya, dia menemukan sebuah rambu lalu lintas yang baru di dekat rumahnya. Bentuknya seperti berikut.
Tanda ini maksudnya apa, ya? (Sumber: uiupdate.ui.ac.id)
Bukan. Tanda itu bukan berarti tukang kolak pisangnya pindah 30 km ke depan. Tanda itu maksudnya adalah kecepatan berkendara di daerah tersebut maksimal 30km/jam. Melihat tanda itu, Indra kemudian teringat akan pelajaran matematikanya di sekolah, tepatnya tentang pertidaksamaan linear. Wah, apa lagi tuh?
Pertidaksamaan Linear
Pertidaksamaan linear adalah kalimat terbuka yang mengandung variabel berderajat satu yang menggunakan tanda <, >, ≤, atau ≥. Adapun bentuk umum dan sifat dari pertidaksamaan linear yaitu seperti pada gambar berikut.
Sifat dan Bentuk Umum Pertidaksamaan Linear
Rambu lalu lintas tadi bisa kita tuliskan ke dalam bentuk pertidaksamaan linear, lho. Caranya adalah dengan memisalkan kecepatan berkendara = x, maka rambu tadi bisa ditulis menjadi:
x < 30km/jam
Contoh lain dari pertidaksamaan linear bisa kamu lihat pada gambar di atas, ya!
Baca Juga: Bentuk-Bentuk Persamaan Logaritma dan Cara Menyelesaikannya
Nah, kalau kita perhatikan, bentuk umum dan sifat pertidaksamaan linear ini mirip-mirip dengan persamaan linear. Lalu, apa ya bedanya persamaan linear dan pertidaksamaan linear?
Perbedaan Persamaan Linear dan Pertidaksamaan Linear
Perbedaan persamaan linear dan pertidaksamaan linear yang paling menonjol adalah penggunaan tandanya. Kalau persamaan linear, kita menggunakan tanda =. Sedangkan pada pertidaksamaan linear, kita menggunakan tanda <, >, ≤, atau ≥.
Selain itu, perbedaannya juga bisa kita lihat ketika ada perkalian atau pembagian dengan bilangan negatif.
Pada persamaan linear, apabila kedua ruas kita kali atau bagi dengan bilangan negatif, tandanya akan tetap = (sama dengan). Hal ini berbeda dengan pertidaksamaan linear.
Pada pertidaksamaan linear, jika ada kasus di mana kedua ruas dikali atau dibagi dengan bilangan negatif (-), maka tanda yang sebelumnya akan berubah menjadi tanda sebaliknya. Contoh:
-3x + 2 < 20
-3x < 18
3x > -18 (tanda < berubah menjadi > saat kedua ruas dikalikan dengan -1 (bilangan negatif))
x > -6
Gimana, gengs? Sudah paham kan, dengan pengertian, bentuk umum, sifat, contoh, serta perbedaan dari persamaan linear dan pertidaksamaan linear? Ternyata, dengan perjalanan Indra membeli kolak pisang, kita dapat menemukan hal-hal semacam ini, ya.
Kalau kamu ingin memelajari materi seperti ini sambil menonton video beranimasi, lengkap dengan infografik dan latihan soal, yuk tonton di ruangbelajar!
Referensi:
Kenginan, M. (2018). Buku Teks Pendamping Matematika untuk Siswa SMA-MA/SMK-MAK Kelas X. Bandung: Srikandi Empat Widya Utama.
Sumber Foto:
Foto ‘Batas kecepatan dipemukiman’ [Daring]. Tautan: http://uiupdate.ui.ac.id/article/rambu-batas-kecepatan-30-kmjam (Diakses: 21 Januari 2021)
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<h1 class="content-title">
Perbedaan Persamaan Linear dan Pertidaksamaan Linear | Matematika Kelas 10 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/kenya-swawikanti" class="">Kenya Swawikanti</a> </p>
<p class="content-info"><span>January 2, 2025 • </span> <span>5 minutes read</span></p>
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<p><img decoding="async" style="width: 820px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Persamaan%20dan%20Pertidaksamaan%20Linear.jpg" alt="Persamaan Linear dan Pertidaksamaan Linear" /></p>
<blockquote>
<p style="text-align: center;"><em>Kamu tahu apa itu persamaan linear dan pertidaksamaan linear? Yuk, pelajari pengertian, bentuk umum, sifat, contoh, dan perbedaannya melalui <strong><a href="https://www.ruangguru.com/blog/c/matematika/matematika-sma-kelas-10">artikel Matematika kelas 10</a></strong> ini!</em></p>
<p style="text-align: center;"><em>—</em></p>
</blockquote>
<p> </p>
<p style="text-align: justify;">Siang itu, Indra sedang tiduran sambil membaca buku komik kesukaannya di dalam kamar. Entah kenapa, suasana sangat hening siang itu. Dari dalam kamar, Indra mendengar suara langkah kaki misterius yang kian lama kian mendekat.</p>
<p style="text-align: justify;">Tiba-tiba, pintu kamar terbuka dari luar dan sosok misterius itu muncul dari balik pintu.</p>
<p style="text-align: justify;">“Aaahhh!” Indra berteriak kaget.</p>
<p style="text-align: justify;">“Ngapain teriak-teriak ih! Kamu kira Mama hantu?”</p>
<p style="text-align: justify;">Ternyata sosok misterius itu adalah Mama Indra.</p>
<p style="text-align: justify;">“Mama sih, bikin kaget! Tiba-tiba buka pintu nggak ngomong-ngomong.”</p>
<p style="text-align: justify;">“Hehe, iya soalnya Mama lagi buru-buru! Tolong beliin kolak pisang ya, Ndra. Bentarlagi temen-temen Mama mau dateng ke sini, nih. Mama masih sibuk nyiapin masakan.”</p>
<p style="text-align: justify;">Indra pun bangkit dari kasur dan menghadap Mama, “Asiikk, hari ini makan kolak pisang! Oke siap, Ma!”</p>
<p style="text-align: justify;">“Harganya berapa ya, Ndra? Mama lupa.”</p>
<p style="text-align: justify;">“Seingetku sih, harganya 8 ribuan per porsi, Ma.”</p>
<p style="text-align: justify;">“Ooohh 8 ribuan, kalau gitu…” Mama membuka dompetnya dan mengambil dua lembar uang dua puluh ribuan, “Nih, kamu beliin semuanya, ya.”</p>
<p style="text-align: justify;">“Oke, Ma!”</p>
<p style="text-align: justify;">Mama kembali ke dapur meninggalkan Indra yang masih kebingungan di kamar. Dalam hati, Indra bergumam,</p>
<p style="text-align: justify;"><em>“Kalau uangnya segini berarti dapetnya berapa porsi, ya?”</em></p>
<p style="text-align: justify;"><em>Hayo</em>, kamu bisa tebak nggak, berapa porsi kolak pisang yang bisa Indra dapatkan? Nah, kejadian seperti ini tuh bisa kita selesaikan menggunakan <span style="font-weight: normal;"><a href="/blog/matematika-kelas-10-membuat-fungsi-kuadrat-dari-grafik" rel="noopener"><span style="font-weight: bold;">persamaan</span></a> linear, lho! Apa itu persamaan linear?</span></p>
<p> </p>
<h2><span style="font-size: 18pt;">Persamaan Linear</span></h2>
<p style="text-align: justify;">Persamaan linear adalah <strong>persamaan yang mengandung variabel berpangkat satu</strong><span style="font-weight: normal;">.</span> Persamaan ini disebut juga dengan persamaan berderajat satu (persamaan linear satu variabel). Adapun bentuk umum dan sifat dari persamaan linear adalah seperti pada gambar berikut.</p>
<p> </p>
<h3><span style="font-size: 14pt;">Sifat dan Bentuk Umum Persamaan Linear</span></h3>
<p style="text-align: justify;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Bentuk%20Umum%20dan%20Sifat%20Persamaan%20Linear.jpg" alt="Bentuk Umum dan Sifat Persamaan Linear" width="600" /></p>
<p> </p>
<p style="text-align: justify;">Nah, cerita pembelian kolak pisang tadi bisa kita selesaikan dengan persamaan linear, nih. Caranya, kita anggap jumlah porsi kolak pisang sama dengan “x”. Lalu, karena Indra harus menghabiskan 40 ribu rupiah untuk membeli jumlah porsi kolak pisang yang belum diketahui dengan harga per porsinya adalah 8 ribu rupiah, maka persamaan linearnya adalah sebagai berikut:</p>
<p style="text-align: center;">8000 x = 40000</p>
<p style="text-align: justify;">Kalau udah begini, langsung kita cari aja nilai x yang memenuhi persamaan tesebut, yaitu:</p>
<p style="text-align: center;">x = 40000 : 8000</p>
<p style="text-align: center;">x = 5</p>
<p style="text-align: justify;">Jadi, jumlah porsi kolak pisang yang akan didapatkan Indra adalah 5 porsi. Paham, ya?</p>
<p><strong>Baca Juga: <a href="/blog/konsep-dasar-vektor" rel="noopener">Mengenal Vektor Bidang 2 Dimensi & Vektor Ruang 3 Dimensi</a></strong></p>
<p style="text-align: justify;">Itu tadi adalah salah satu contoh paling sederhana dari persamaan linear. <em>Next</em>, kita belajar sifat persamaan linear dengan menggunakan contoh persamaan kolak pisang tadi.</p>
<p style="text-align: center;">8000 x = 40000</p>
<p style="text-align: justify;">Persamaan itu, tidak akan berubah apabila kita ganti menjadi, misalnya:</p>
<ol>
<li style="text-align: justify;"><span style="background-color: transparent;">8000 x + 2000 = 40000 + 2000</span></li>
<li style="text-align: justify;"><span style="background-color: transparent;">8000 x – 2000 = 40000 – 2000</span></li>
</ol>
<p> </p>
<p style="text-align: justify;">Dalam persamaan linear, <span style="font-weight: bold;">penjumlahan dan pengurangan bilangan di kedua ruas tidak akan mengubah nilai persamaan tersebut</span>. Artinya, <span style="font-weight: normal;">persamaan kolak pisang awal, bernilai sama dengan persamaan 1 dan persamaan 2.</span></p>
<p style="text-align: justify;">Hal ini juga berlaku apabila kita ganti menjadi, misalnya:</p>
<ol style="list-style-type: lower-alpha;">
<li style="text-align: justify;"><span style="background-color: transparent;">8000 x X 5 = 40000 X 5</span></li>
<li style="text-align: justify;"><span style="background-color: transparent;">8000 x : 5 = 40000 : 5</span></li>
</ol>
<p> </p>
<p style="text-align: justify;">Sama dengan penjumlahan dan pengurangan, dalam persamaan linear, <span style="font-weight: bold;">perkalian dan pembagian bilangan di kedua ruas juga tidak akan mengubah nilai persamaan tersebut</span>. Artinya, <span style="font-weight: normal;">persamaan kolak pisang awal, bernilai sama dengan persamaan a dan persamaan b. </span>Inilah yang dimaksud dengan <strong>sifat persamaan linear</strong><span style="font-weight: normal;">.</span></p>
<p style="text-align: justify;">Sebelum membeli kolak pisang, Indra mencuri waktu untuk berkeliling sebentar. Di tengah perjalanannya, dia menemukan sebuah rambu lalu lintas yang baru di dekat rumahnya. Bentuknya seperti berikut.</p>
<p><img decoding="async" style="width: 270px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/30km.jpg" alt="30km" width="270" /></p>
<p style="text-align: center;"><em>Tanda ini maksudnya apa, ya? (Sumber: uiupdate.ui.ac.id)</em></p>
<p> </p>
<p style="text-align: justify;">Bukan. Tanda itu bukan berarti tukang kolak pisangnya pindah 30 km ke depan. Tanda itu maksudnya adalah kecepatan berkendara di daerah tersebut maksimal 30km/jam. Melihat tanda itu, Indra kemudian teringat akan pelajaran matematikanya di sekolah, tepatnya tentang <a href="/blog/pengertian-dan-cara-penyelesaian-pertidaksamaan-bagian-1" rel="noopener"><span style="font-weight: bold;">pertidaksamaan</span></a> linear. Wah, apa lagi tuh?</p>
<p> </p>
<h2><span style="font-size: 18pt;">Pertidaksamaan Linear</span></h2>
<p style="text-align: justify;">Pertidaksamaan linear adalah <span style="font-weight: bold;">kalimat terbuka yang mengandung variabel berderajat satu yang menggunakan tanda <, >, ≤, atau ≥</span>. Adapun bentuk umum dan sifat dari pertidaksamaan linear yaitu seperti pada gambar berikut.</p>
<p> </p>
<h3><span style="font-size: 14pt;">Sifat dan Bentuk Umum Pertidaksamaan Linear</span></h3>
<p style="text-align: justify;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Bentuk%20Umum%20dan%20Sifat%20Pertidaksamaan%20Linear.jpg" alt="Bentuk Umum dan Sifat Pertidaksamaan Linear" width="600" /></p>
<p> </p>
<p style="text-align: justify;">Rambu lalu lintas tadi bisa kita tuliskan ke dalam bentuk pertidaksamaan linear, lho. Caranya adalah dengan memisalkan kecepatan berkendara = x, maka rambu tadi bisa ditulis menjadi:</p>
<p style="text-align: center;">x <u><</u> 30km/jam</p>
<p>Contoh lain dari pertidaksamaan linear bisa kamu lihat pada gambar di atas, ya!</p>
<p><strong>Baca Juga: <a href="/blog/persamaan-logaritma-mtk-kelas-x" rel="noopener">Bentuk-Bentuk Persamaan Logaritma dan Cara Menyelesaikannya</a></strong></p>
<p style="text-align: justify;">Nah, kalau kita perhatikan, bentuk umum dan sifat pertidaksamaan linear ini mirip-mirip dengan persamaan linear. Lalu, apa ya bedanya <span style="font-weight: normal;">persamaan linear dan pertidaksamaan linear?</span></p>
<p> </p>
<h2><span style="font-size: 18pt;">Perbedaan Persamaan Linear dan Pertidaksamaan Linear</span></h2>
<p style="text-align: justify;">Perbedaan persamaan linear dan pertidaksamaan <strong><a href="/blog/matematika-kelas-10-pertidaksamaan-linear-dua-variabel-sistem-pertidaksamaan-linear-dua-variabel" rel="noopener">linear</a> </strong>yang paling menonjol adalah <span style="font-weight: bold;">penggunaan tandanya</span>. Kalau persamaan linear, kita menggunakan <span style="font-weight: bold;">tanda =</span>. Sedangkan pada pertidaksamaan linear, kita menggunakan <span style="font-weight: bold;">tanda <, >, ≤, atau ≥</span>.</p>
<p style="text-align: justify;">Selain itu, perbedaannya juga bisa kita lihat ketika ada <span style="font-weight: bold;">perkalian atau pembagian</span> <span style="font-weight: bold;">dengan bilangan negatif</span>.</p>
<p style="text-align: justify;">Pada persamaan linear, apabila kedua ruas kita kali atau bagi dengan bilangan negatif, tandanya akan <span style="font-weight: bold;">tetap =</span> (sama dengan). Hal ini berbeda dengan pertidaksamaan linear.</p>
<p style="text-align: justify;">Pada pertidaksamaan linear, jika ada kasus di mana <span style="font-weight: normal;">kedua ruas dikali atau dibagi dengan bilangan negatif (-), maka </span><strong>tanda yang sebelumnya akan berubah menjadi tanda sebaliknya</strong>. Contoh:</p>
<p style="text-align: justify;">-3x + 2 < 20</p>
<p style="text-align: justify;">-3x < 18</p>
<p style="text-align: justify;">3x > -18 (tanda < berubah menjadi > saat kedua ruas dikalikan dengan -1 (bilangan negatif))</p>
<p style="text-align: justify;">x > -6</p>
<p> </p>
<p style="text-align: justify;">Gimana, gengs? Sudah paham kan, dengan <span style="font-weight: normal;">pengertian, bentuk umum, sifat, contoh, serta perbedaan dari persamaan linear dan pertidaksamaan linear?</span> Ternyata, dengan perjalanan Indra membeli kolak pisang, kita dapat menemukan hal-hal semacam ini, ya.</p>
<p style="text-align: justify;">Kalau kamu ingin memelajari materi seperti ini sambil menonton video beranimasi, lengkap dengan infografik dan latihan soal, yuk tonton di <a href="https://ruangguru.onelink.me/blPk/eaff0eb9" target="_blank" rel="noopener"><span style="font-weight: bold;">ruangbelajar</span></a>!</p>
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<p style="text-align: left;"><strong>Referensi: </strong></p>
<p style="text-align: left;">Kenginan, M. (2018). <em>Buku Teks Pendamping Matematika untuk Siswa SMA-MA/SMK-MAK Kelas X</em>. Bandung: Srikandi Empat Widya Utama.</p>
<p style="text-align: left;"><strong>Sumber Foto: </strong></p>
<p style="text-align: left;">Foto ‘Batas kecepatan dipemukiman’ [Daring]. Tautan: http://uiupdate.ui.ac.id/article/rambu-batas-kecepatan-30-kmjam (Diakses: 21 Januari 2021)</p>
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<div class="d-lg-none text-center">
<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.facebook.com/ruanggurucom/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/facebook.png" loading="lazy" alt="Logo Facebook Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://twitter.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/twitter.png" loading=" lazy" alt="Logo Twitter Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.youtube.com/ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/youtube.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/youtube.png" loading=" lazy" alt="Logo Youtube Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.linkedin.com/company/ruangguru-com">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/linkedin.png" loading=" lazy" alt="Logo LinkedIn Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.tiktok.com/@ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/tiktok.png" loading=" lazy" alt="Logo TikTok Footer" width="32px" height="32px" />
</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>