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-27-4b=-9(5b-3)
We move all terms to the left:
-27-4b-(-9(5b-3))=0
We calculate terms in parentheses: -(-9(5b-3)), so:We get rid of parentheses
-9(5b-3)
We multiply parentheses
-45b+27
Back to the equation:
-(-45b+27)
-4b+45b-27-27=0
We add all the numbers together, and all the variables
41b-54=0
We move all terms containing b to the left, all other terms to the right
41b=54
b=54/41
b=1+13/41
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