Solve for x
x=y-4
Solve for y
y=x+4
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-2x=8-2y
Subtract 2y from both sides.
\frac{-2x}{-2}=\frac{8-2y}{-2}
Divide both sides by -2.
x=\frac{8-2y}{-2}
Dividing by -2 undoes the multiplication by -2.
x=y-4
Divide 8-2y by -2.
2y=8+2x
Add 2x to both sides.
2y=2x+8
The equation is in standard form.
\frac{2y}{2}=\frac{2x+8}{2}
Divide both sides by 2.
y=\frac{2x+8}{2}
Dividing by 2 undoes the multiplication by 2.
y=x+4
Divide 8+2x by 2.
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