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-m/2=3
We move all terms to the left:
-m/2-(3)=0
We multiply all the terms by the denominator
-m-3*2=0
We add all the numbers together, and all the variables
-1m-6=0
We move all terms containing m to the left, all other terms to the right
-m=6
m=6/-1
m=-6
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