Yth. Para Ahli Matematika Aku ada tugas tolong bantu menyelesaikan nya

<p><strong>Jawaban Foto Pertama</strong></p><p>x - 3y - 2z = 0...(1)</p><p>x + 2y + z = 5...(2)</p><p>2x - y + 2z = 20...(3)</p><p><strong>Eliminasi persamaan (2) dan (1)</strong></p><p>x + 2y + z = 5</p><p>x - 3y - 2z = 0</p><p>______________-</p><p>5y + 3z = 5...(4)</p><p><strong>Eliminasi persamaan (1) dan (3)</strong></p><p>x - 3y - 2z = 0. &nbsp;|×2</p><p>2x - y + 2z = 20|×1</p><p>&nbsp;</p><p>2x - 6y - 4z = 0</p><p>2x - y + 2z = 20</p><p>________________-</p><p>-5y - 6z = -20...(5)</p><p><strong>Eliminasi persamaan (4) dan (5)</strong></p><p>5y + 3z = 5</p><p>-5y - 6z = -20</p><p>______________+</p><p>-3z = -15</p><p>z = 5</p><p>&nbsp;</p><p><strong>Substitusi z = 5 ke persamaan (4)</strong></p><p>5y + 3(5) = 5</p><p>5y = 5 - 3(5)</p><p>5y = 5 - 15</p><p>5y = -10</p><p>y = -2</p><p><strong>Substitusi z = 5 dan y = -2 ke persamaan (2)</strong></p><p>x + 2(-2) + 5 = 5</p><p>x - 4 + 5 = 5</p><p>x = 5 + 4 - 5 = 4</p><p>&nbsp;</p><p>Maka HP dari SPLTV ialah {4, -2, 5)</p>