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-4=2+9m
We move all terms to the left:
-4-(2+9m)=0
We add all the numbers together, and all the variables
-(9m+2)-4=0
We get rid of parentheses
-9m-2-4=0
We add all the numbers together, and all the variables
-9m-6=0
We move all terms containing m to the left, all other terms to the right
-9m=6
m=6/-9
m=-2/3
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