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8=m/3+4
We move all terms to the left:
8-(m/3+4)=0
We get rid of parentheses
-m/3-4+8=0
We multiply all the terms by the denominator
-m-4*3+8*3=0
We add all the numbers together, and all the variables
-1m+12=0
We move all terms containing m to the left, all other terms to the right
-m=-12
m=-12/-1
m=+12
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