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-7b-1=5(2b-7)
We move all terms to the left:
-7b-1-(5(2b-7))=0
We calculate terms in parentheses: -(5(2b-7)), so:We get rid of parentheses
5(2b-7)
We multiply parentheses
10b-35
Back to the equation:
-(10b-35)
-7b-10b+35-1=0
We add all the numbers together, and all the variables
-17b+34=0
We move all terms containing b to the left, all other terms to the right
-17b=-34
b=-34/-17
b=+2
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