Solve for w
w=\frac{f-24}{2}
Solve for f
f=2\left(w+12\right)
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2w=f-24
Subtract 24 from both sides.
\frac{2w}{2}=\frac{f-24}{2}
Divide both sides by 2.
w=\frac{f-24}{2}
Dividing by 2 undoes the multiplication by 2.
w=\frac{f}{2}-12
Divide f-24 by 2.
f=2w+24
Swap sides so that all variable terms are on the left hand side.
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