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-64=2(6b+4)
We move all terms to the left:
-64-(2(6b+4))=0
We calculate terms in parentheses: -(2(6b+4)), so:We get rid of parentheses
2(6b+4)
We multiply parentheses
12b+8
Back to the equation:
-(12b+8)
-12b-8-64=0
We add all the numbers together, and all the variables
-12b-72=0
We move all terms containing b to the left, all other terms to the right
-12b=72
b=72/-12
b=-6
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