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-63=40+8b
We move all terms to the left:
-63-(40+8b)=0
We add all the numbers together, and all the variables
-(8b+40)-63=0
We get rid of parentheses
-8b-40-63=0
We add all the numbers together, and all the variables
-8b-103=0
We move all terms containing b to the left, all other terms to the right
-8b=103
b=103/-8
b=-12+7/8
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