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-7=m/2-4
We move all terms to the left:
-7-(m/2-4)=0
We get rid of parentheses
-m/2+4-7=0
We multiply all the terms by the denominator
-m+4*2-7*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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