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(5h-7)=(3h+21)
We move all terms to the left:
(5h-7)-((3h+21))=0
We get rid of parentheses
5h-((3h+21))-7=0
We calculate terms in parentheses: -((3h+21)), so:We get rid of parentheses
(3h+21)
We get rid of parentheses
3h+21
Back to the equation:
-(3h+21)
5h-3h-21-7=0
We add all the numbers together, and all the variables
2h-28=0
We move all terms containing h to the left, all other terms to the right
2h=28
h=28/2
h=14
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