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80=3m-5
We move all terms to the left:
80-(3m-5)=0
We get rid of parentheses
-3m+5+80=0
We add all the numbers together, and all the variables
-3m+85=0
We move all terms containing m to the left, all other terms to the right
-3m=-85
m=-85/-3
m=28+1/3
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