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5m-7+4m=9+2m
We move all terms to the left:
5m-7+4m-(9+2m)=0
We add all the numbers together, and all the variables
5m+4m-(2m+9)-7=0
We add all the numbers together, and all the variables
9m-(2m+9)-7=0
We get rid of parentheses
9m-2m-9-7=0
We add all the numbers together, and all the variables
7m-16=0
We move all terms containing m to the left, all other terms to the right
7m=16
m=16/7
m=2+2/7
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