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-2(b-4)=-8
We move all terms to the left:
-2(b-4)-(-8)=0
We add all the numbers together, and all the variables
-2(b-4)+8=0
We multiply parentheses
-2b+8+8=0
We add all the numbers together, and all the variables
-2b+16=0
We move all terms containing b to the left, all other terms to the right
-2b=-16
b=-16/-2
b=+8
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