Solve for x
x=-4y-18
Solve for y
y=-\frac{x}{4}-\frac{9}{2}
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-x=4y+18
Swap sides so that all variable terms are on the left hand side.
\frac{-x}{-1}=\frac{4y+18}{-1}
Divide both sides by -1.
x=\frac{4y+18}{-1}
Dividing by -1 undoes the multiplication by -1.
x=-4y-18
Divide 4y+18 by -1.
4y=-x-18
Subtract 18 from both sides.
\frac{4y}{4}=\frac{-x-18}{4}
Divide both sides by 4.
y=\frac{-x-18}{4}
Dividing by 4 undoes the multiplication by 4.
y=-\frac{x}{4}-\frac{9}{2}
Divide -x-18 by 4.
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