Solve for x
x=\frac{y+7}{2}
Solve for y
y=2x-7
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2x+y-4x=-7
Subtract 4x from both sides.
-2x+y=-7
Combine 2x and -4x to get -2x.
-2x=-7-y
Subtract y from both sides.
-2x=-y-7
The equation is in standard form.
\frac{-2x}{-2}=\frac{-y-7}{-2}
Divide both sides by -2.
x=\frac{-y-7}{-2}
Dividing by -2 undoes the multiplication by -2.
x=\frac{y+7}{2}
Divide -7-y by -2.
y=4x-7-2x
Subtract 2x from both sides.
y=2x-7
Combine 4x and -2x to get 2x.
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