Solve for r
r=\frac{h+8}{2}
Solve for h
h=2\left(r-4\right)
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h=2r-8
Use the distributive property to multiply 2 by r-4.
2r-8=h
Swap sides so that all variable terms are on the left hand side.
2r=h+8
Add 8 to both sides.
\frac{2r}{2}=\frac{h+8}{2}
Divide both sides by 2.
r=\frac{h+8}{2}
Dividing by 2 undoes the multiplication by 2.
r=\frac{h}{2}+4
Divide h+8 by 2.
h=2r-8
Use the distributive property to multiply 2 by r-4.
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