Solve for f
f=\frac{g}{3}
Solve for g
g=3f
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3f=g
Multiply both sides of the equation by 33, the least common multiple of 11,33.
\frac{3f}{3}=\frac{g}{3}
Divide both sides by 3.
f=\frac{g}{3}
Dividing by 3 undoes the multiplication by 3.
3f=g
Multiply both sides of the equation by 33, the least common multiple of 11,33.
g=3f
Swap sides so that all variable terms are on the left hand side.
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