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4.5h+3h=30.5
We move all terms to the left:
4.5h+3h-(30.5)=0
We add all the numbers together, and all the variables
7.5h-30.5=0
We move all terms containing h to the left, all other terms to the right
7.5h=30.5
h=30.5/7.5
h=4+0.5/7.5
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