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-(4+m)=3m
We move all terms to the left:
-(4+m)-(3m)=0
We add all the numbers together, and all the variables
-(m+4)-3m=0
We add all the numbers together, and all the variables
-3m-(m+4)=0
We get rid of parentheses
-3m-m-4=0
We add all the numbers together, and all the variables
-4m-4=0
We move all terms containing m to the left, all other terms to the right
-4m=4
m=4/-4
m=-1
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