Solve for x
x=\frac{5-y}{3}
Solve for y
y=5-3x
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-9x+15=3y
Swap sides so that all variable terms are on the left hand side.
-9x=3y-15
Subtract 15 from both sides.
\frac{-9x}{-9}=\frac{3y-15}{-9}
Divide both sides by -9.
x=\frac{3y-15}{-9}
Dividing by -9 undoes the multiplication by -9.
x=\frac{5-y}{3}
Divide -15+3y by -9.
3y=15-9x
The equation is in standard form.
\frac{3y}{3}=\frac{15-9x}{3}
Divide both sides by 3.
y=\frac{15-9x}{3}
Dividing by 3 undoes the multiplication by 3.
y=5-3x
Divide -9x+15 by 3.
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