Solve for x
x=\frac{-y-9}{2}
Solve for y
y=-2x-9
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4x=-18-2y
Subtract 2y from both sides.
4x=-2y-18
The equation is in standard form.
\frac{4x}{4}=\frac{-2y-18}{4}
Divide both sides by 4.
x=\frac{-2y-18}{4}
Dividing by 4 undoes the multiplication by 4.
x=\frac{-y-9}{2}
Divide -18-2y by 4.
2y=-18-4x
Subtract 4x from both sides.
2y=-4x-18
The equation is in standard form.
\frac{2y}{2}=\frac{-4x-18}{2}
Divide both sides by 2.
y=\frac{-4x-18}{2}
Dividing by 2 undoes the multiplication by 2.
y=-2x-9
Divide -18-4x by 2.
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