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