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-2(b+3)=8
We move all terms to the left:
-2(b+3)-(8)=0
We multiply parentheses
-2b-6-8=0
We add all the numbers together, and all the variables
-2b-14=0
We move all terms containing b to the left, all other terms to the right
-2b=14
b=14/-2
b=-7
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