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90=8b-8
We move all terms to the left:
90-(8b-8)=0
We get rid of parentheses
-8b+8+90=0
We add all the numbers together, and all the variables
-8b+98=0
We move all terms containing b to the left, all other terms to the right
-8b=-98
b=-98/-8
b=12+1/4
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