tammiet36 tammiet36

10-07-2020
Mathematics

contestada

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

Respuesta :

10-07-2020

Substitue what y equals for y and solve.

[tex]

-4x+7(3x+15)=20 \\

-4x+27x+105=20 \\

23x=-85 \\

x=-\boxed{\frac{85}{23}}

[/tex]

Hope this helps.

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