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(H)=15-3H
We move all terms to the left:
(H)-(15-3H)=0
We add all the numbers together, and all the variables
H-(-3H+15)=0
We get rid of parentheses
H+3H-15=0
We add all the numbers together, and all the variables
4H-15=0
We move all terms containing H to the left, all other terms to the right
4H=15
H=15/4
H=3+3/4
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