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3=b-63/8
We move all terms to the left:
3-(b-63/8)=0
We add all the numbers together, and all the variables
-(+b-63/8)+3=0
We get rid of parentheses
-b+3+63/8=0
We multiply all the terms by the denominator
-b*8+63+3*8=0
We add all the numbers together, and all the variables
-b*8+87=0
Wy multiply elements
-8b+87=0
We move all terms containing b to the left, all other terms to the right
-8b=-87
b=-87/-8
b=10+7/8
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