Tolong jawab dong

<p>&nbsp;jawabannya 7x +9y</p><p>&nbsp;</p><p>&nbsp;</p><p>cara = &nbsp;8x + 7y</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;x - 2y</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; _______ -</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</p><p>&nbsp;</p><p>8x - x = 7x</p><p>7y - (-2y) = 7y + 2y = 9y</p><p>&nbsp;</p><p>jadi 7x + 9y&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>maaf kalau salah</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</p>