Solve for x
x=\frac{y-7}{9}
Solve for y
y=9x+7
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-36x=28-4y
Subtract 4y from both sides.
\frac{-36x}{-36}=\frac{28-4y}{-36}
Divide both sides by -36.
x=\frac{28-4y}{-36}
Dividing by -36 undoes the multiplication by -36.
x=\frac{y-7}{9}
Divide 28-4y by -36.
4y=28+36x
Add 36x to both sides.
4y=36x+28
The equation is in standard form.
\frac{4y}{4}=\frac{36x+28}{4}
Divide both sides by 4.
y=\frac{36x+28}{4}
Dividing by 4 undoes the multiplication by 4.
y=9x+7
Divide 28+36x by 4.
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