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-30=-5(6b-6)
We move all terms to the left:
-30-(-5(6b-6))=0
We calculate terms in parentheses: -(-5(6b-6)), so:We get rid of parentheses
-5(6b-6)
We multiply parentheses
-30b+30
Back to the equation:
-(-30b+30)
30b-30-30=0
We add all the numbers together, and all the variables
30b-60=0
We move all terms containing b to the left, all other terms to the right
30b=60
b=60/30
b=2
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