Solve for h
h=3
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13h-3h-5h+h=18
Combine 12h and h to get 13h.
10h-5h+h=18
Combine 13h and -3h to get 10h.
5h+h=18
Combine 10h and -5h to get 5h.
6h=18
Combine 5h and h to get 6h.
h=\frac{18}{6}
Divide both sides by 6.
h=3
Divide 18 by 6 to get 3.
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