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-3.86-8.1h=-4.7h-3.9h-7.36
We move all terms to the left:
-3.86-8.1h-(-4.7h-3.9h-7.36)=0
We add all the numbers together, and all the variables
-8.1h-(-8.6h-7.36)-3.86=0
We get rid of parentheses
-8.1h+8.6h+7.36-3.86=0
We add all the numbers together, and all the variables
0.5h+3.5=0
We move all terms containing h to the left, all other terms to the right
0.5h=-3.5
h=-3.5/0.5
h=-7
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