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10.5=(3b-12.5)
We move all terms to the left:
10.5-((3b-12.5))=0
We calculate terms in parentheses: -((3b-12.5)), so:We get rid of parentheses
(3b-12.5)
We get rid of parentheses
3b-12.5
Back to the equation:
-(3b-12.5)
-3b+12.5+10.5=0
We add all the numbers together, and all the variables
-3b+23=0
We move all terms containing b to the left, all other terms to the right
-3b=-23
b=-23/-3
b=7+2/3
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