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8(b-89)-77=-61
We move all terms to the left:
8(b-89)-77-(-61)=0
We add all the numbers together, and all the variables
8(b-89)-16=0
We multiply parentheses
8b-712-16=0
We add all the numbers together, and all the variables
8b-728=0
We move all terms containing b to the left, all other terms to the right
8b=728
b=728/8
b=91
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