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8+20=45-4h
We move all terms to the left:
8+20-(45-4h)=0
We add all the numbers together, and all the variables
-(-4h+45)+8+20=0
We add all the numbers together, and all the variables
-(-4h+45)+28=0
We get rid of parentheses
4h-45+28=0
We add all the numbers together, and all the variables
4h-17=0
We move all terms containing h to the left, all other terms to the right
4h=17
h=17/4
h=4+1/4
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