Solve for x
x=1-3y
Solve for y
y=\frac{1-x}{3}
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-6x=18y+3-9
Subtract 9 from both sides.
-6x=18y-6
Subtract 9 from 3 to get -6.
\frac{-6x}{-6}=\frac{18y-6}{-6}
Divide both sides by -6.
x=\frac{18y-6}{-6}
Dividing by -6 undoes the multiplication by -6.
x=1-3y
Divide 18y-6 by -6.
18y+3=9-6x
Swap sides so that all variable terms are on the left hand side.
18y=9-6x-3
Subtract 3 from both sides.
18y=6-6x
Subtract 3 from 9 to get 6.
\frac{18y}{18}=\frac{6-6x}{18}
Divide both sides by 18.
y=\frac{6-6x}{18}
Dividing by 18 undoes the multiplication by 18.
y=\frac{1-x}{3}
Divide 6-6x by 18.
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