Solve for x
x=\frac{8-9y}{13}
Solve for y
y=\frac{8-13x}{9}
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13x=8-9y
Subtract 9y from both sides.
\frac{13x}{13}=\frac{8-9y}{13}
Divide both sides by 13.
x=\frac{8-9y}{13}
Dividing by 13 undoes the multiplication by 13.
9y=8-13x
Subtract 13x from both sides.
\frac{9y}{9}=\frac{8-13x}{9}
Divide both sides by 9.
y=\frac{8-13x}{9}
Dividing by 9 undoes the multiplication by 9.
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