Solve for x
x=\frac{3\left(y+24\right)}{4}
Solve for y
y=\frac{4\left(x-18\right)}{3}
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12x-216=9y
Swap sides so that all variable terms are on the left hand side.
12x=9y+216
Add 216 to both sides.
\frac{12x}{12}=\frac{9y+216}{12}
Divide both sides by 12.
x=\frac{9y+216}{12}
Dividing by 12 undoes the multiplication by 12.
x=\frac{3y}{4}+18
Divide 216+9y by 12.
9y=12x-216
The equation is in standard form.
\frac{9y}{9}=\frac{12x-216}{9}
Divide both sides by 9.
y=\frac{12x-216}{9}
Dividing by 9 undoes the multiplication by 9.
y=\frac{4x}{3}-24
Divide -216+12x by 9.
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