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(-2.-5)m=2
We move all terms to the left:
(-2.-5)m-(2)=0
We add all the numbers together, and all the variables
(-7)m-2=0
We multiply parentheses
-7m-2=0
We move all terms containing m to the left, all other terms to the right
-7m=2
m=2/-7
m=-2/7
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