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b+8=-9b-2
We move all terms to the left:
b+8-(-9b-2)=0
We get rid of parentheses
b+9b+2+8=0
We add all the numbers together, and all the variables
10b+10=0
We move all terms containing b to the left, all other terms to the right
10b=-10
b=-10/10
b=-1
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