Solve for x
x=-\frac{y}{2}+3
Solve for y
y=6-2x
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-2y-4x+12=0
Combine y and -3y to get -2y.
-4x+12=2y
Add 2y to both sides. Anything plus zero gives itself.
-4x=2y-12
Subtract 12 from both sides.
\frac{-4x}{-4}=\frac{2y-12}{-4}
Divide both sides by -4.
x=\frac{2y-12}{-4}
Dividing by -4 undoes the multiplication by -4.
x=-\frac{y}{2}+3
Divide -12+2y by -4.
-2y-4x+12=0
Combine y and -3y to get -2y.
-2y+12=4x
Add 4x to both sides. Anything plus zero gives itself.
-2y=4x-12
Subtract 12 from both sides.
\frac{-2y}{-2}=\frac{4x-12}{-2}
Divide both sides by -2.
y=\frac{4x-12}{-2}
Dividing by -2 undoes the multiplication by -2.
y=6-2x
Divide -12+4x by -2.
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