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8=85-m
We move all terms to the left:
8-(85-m)=0
We add all the numbers together, and all the variables
-(-1m+85)+8=0
We get rid of parentheses
1m-85+8=0
We add all the numbers together, and all the variables
m-77=0
We move all terms containing m to the left, all other terms to the right
m=77
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