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30=-5(3m+6)
We move all terms to the left:
30-(-5(3m+6))=0
We calculate terms in parentheses: -(-5(3m+6)), so:We get rid of parentheses
-5(3m+6)
We multiply parentheses
-15m-30
Back to the equation:
-(-15m-30)
15m+30+30=0
We add all the numbers together, and all the variables
15m+60=0
We move all terms containing m to the left, all other terms to the right
15m=-60
m=-60/15
m=-4
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