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-m/3-7=-4
We move all terms to the left:
-m/3-7-(-4)=0
We add all the numbers together, and all the variables
-m/3-3=0
We multiply all the terms by the denominator
-m-3*3=0
We add all the numbers together, and all the variables
-1m-9=0
We move all terms containing m to the left, all other terms to the right
-m=9
m=9/-1
m=-9
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