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-28=3m+-42
We move all terms to the left:
-28-(3m+-42)=0
We add all the numbers together, and all the variables
-(3m-42)-28=0
We get rid of parentheses
-3m+42-28=0
We add all the numbers together, and all the variables
-3m+14=0
We move all terms containing m to the left, all other terms to the right
-3m=-14
m=-14/-3
m=4+2/3
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