Solve for y
y=-\frac{x}{6}+3
Solve for x
x=18-6y
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6y=18-x
Subtract x from both sides.
\frac{6y}{6}=\frac{18-x}{6}
Divide both sides by 6.
y=\frac{18-x}{6}
Dividing by 6 undoes the multiplication by 6.
y=-\frac{x}{6}+3
Divide 18-x by 6.
x=18-6y
Subtract 6y from both sides.
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