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3(2-5m)=66
We move all terms to the left:
3(2-5m)-(66)=0
We add all the numbers together, and all the variables
3(-5m+2)-66=0
We multiply parentheses
-15m+6-66=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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