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-13=-8+7.5h
We move all terms to the left:
-13-(-8+7.5h)=0
We add all the numbers together, and all the variables
-(7.5h-8)-13=0
We get rid of parentheses
-7.5h+8-13=0
We add all the numbers together, and all the variables
-7.5h-5=0
We move all terms containing h to the left, all other terms to the right
-7.5h=5
h=5/-7.5
h=-5/7.5
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