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8=-4(1)+b
We move all terms to the left:
8-(-4(1)+b)=0
We add all the numbers together, and all the variables
-(b-41)+8=0
We get rid of parentheses
-b+41+8=0
We add all the numbers together, and all the variables
-1b+49=0
We move all terms containing b to the left, all other terms to the right
-b=-49
b=-49/-1
b=+49
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