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-7-6b=-(b-3)
We move all terms to the left:
-7-6b-(-(b-3))=0
We calculate terms in parentheses: -(-(b-3)), so:We get rid of parentheses
-(b-3)
We get rid of parentheses
-b+3
We add all the numbers together, and all the variables
-1b+3
Back to the equation:
-(-1b+3)
-6b+1b-3-7=0
We add all the numbers together, and all the variables
-5b-10=0
We move all terms containing b to the left, all other terms to the right
-5b=10
b=10/-5
b=-2
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