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5b-4(-8-3b)=-87
We move all terms to the left:
5b-4(-8-3b)-(-87)=0
We add all the numbers together, and all the variables
5b-4(-3b-8)-(-87)=0
We add all the numbers together, and all the variables
5b-4(-3b-8)+87=0
We multiply parentheses
5b+12b+32+87=0
We add all the numbers together, and all the variables
17b+119=0
We move all terms containing b to the left, all other terms to the right
17b=-119
b=-119/17
b=-7
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