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63=7(1+7b)
We move all terms to the left:
63-(7(1+7b))=0
We add all the numbers together, and all the variables
-(7(7b+1))+63=0
We calculate terms in parentheses: -(7(7b+1)), so:We get rid of parentheses
7(7b+1)
We multiply parentheses
49b+7
Back to the equation:
-(49b+7)
-49b-7+63=0
We add all the numbers together, and all the variables
-49b+56=0
We move all terms containing b to the left, all other terms to the right
-49b=-56
b=-56/-49
b=1+1/7
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