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-1=8b+15
We move all terms to the left:
-1-(8b+15)=0
We get rid of parentheses
-8b-15-1=0
We add all the numbers together, and all the variables
-8b-16=0
We move all terms containing b to the left, all other terms to the right
-8b=16
b=16/-8
b=-2
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