-3x + 7y = 1 2x + 5y = -20 menggunakan metode campuran

<p>-3x + 7y = 1</p><p>2x + 5y = -20</p><p>&nbsp;</p><p>-3x + 7y = 1 &nbsp; &nbsp; |x 2| &nbsp; &nbsp; -6x + 14y = 2</p><p>&nbsp;2x + 5y = -20 &nbsp;|x 3| &nbsp; &nbsp; &nbsp;6x + 15y = -60</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ———————— &nbsp;+</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 29y = -58</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; y = -58/29&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;y &nbsp;= -2</p><p>&nbsp;</p><p>2x + 5y = -20</p><p>==&gt; 2x + 5(-2) = -20</p><p>==&gt; 2x + (-10) = -20</p><p>==&gt; 2x = -20 + 10</p><p>==&gt; 2x = -10</p><p>==&gt; x = -10/2</p><p>==&gt; x = -5</p><p>&nbsp;</p><p>Jadi, x = -5 dan y = -2</p><p>&nbsp;</p><p>Semoga membantu dan semangat belajar!</p>