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Solve the equation -4x + 7 y equals 20. Y=3x+15
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Solve the equation -4x + 7 y equals 20. Y=3x+15

User Wade J
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1 Answer

5 votes

Substitue what y equals for y and solve.


</p><p>-4x+7(3x+15)=20 \\</p><p>-4x+27x+105=20 \\</p><p>23x=-85 \\</p><p>x=-\boxed{(85)/(23)}</p><p>

Hope this helps.

User Ivan Vergiliev
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