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-b=b+8
We move all terms to the left:
-b-(b+8)=0
We add all the numbers together, and all the variables
-1b-(b+8)=0
We get rid of parentheses
-1b-b-8=0
We add all the numbers together, and all the variables
-2b-8=0
We move all terms containing b to the left, all other terms to the right
-2b=8
b=8/-2
b=-4
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