Halo kak mohon dibantu yaaa

<p>Jawaban&nbsp;</p><p>Harga buah-buahan tsb</p><p><strong>Anggur: &nbsp;Rp 8000/kg</strong></p><p><strong>Apel: Rp 3000/kg</strong></p><p><strong>Jeruk: Rp 2000/kg</strong></p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p><strong>Pembahasan&nbsp;</strong></p><p>x = anggur, y= apel, z= jeruk</p><p>&nbsp;</p><p>Dini: x + 3y + 2z = 21000........... (i)&nbsp;</p><p>Karin: x + y + z = 13000............. (ii)&nbsp;</p><p>Andin: 2x + y + 3z = 25000....... (iii)&nbsp;</p><p>&nbsp;</p><p>(i) - (ii)&nbsp;</p><p>2y - z = 8000........(iv)</p><p>&nbsp;</p><p>(iii) - (i)&nbsp;</p><p>x + 2z = 12000....... (v)&nbsp;</p><p>&nbsp;</p><p>2×(ii) - (i)&nbsp;</p><p>x - y = 5000</p><p>&lt;=&gt; x = 5000 + y &nbsp;........ (vi) substitusikan ke (v)&nbsp;</p><p>&nbsp;</p><p>(v) x + 2z = 12000</p><p>&lt;=&gt; (5000 + y) + 2z = 12000</p><p>&lt;=&gt; y = 7000 - 2z ........ (vii) substitusikan ke (iv)&nbsp;</p><p>&nbsp;</p><p>(iv) 2y - z = 8000</p><p>&lt;=&gt; 2(7000 - 2z) - z = 8000</p><p>&lt;=&gt; 3z = 6000</p><p>&lt;=&gt; z = 2000</p><p>&nbsp;</p><p>(vii) &nbsp;y = 7000 - 2 × 2000 = 3000</p><p>(vi) &nbsp; x = 5000 + 3000 = 8000</p><p>&nbsp;</p><p>Anggur: &nbsp;Rp 8000/kg</p><p>Apel: Rp 3000/kg</p><p>Jeruk: Rp 2000/kg</p><p>&nbsp;</p><p>&nbsp;</p>