(-2-1)m=-3

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Solution for (-2-1)m=-3 equation: 



(-2-1)m=-3

We move all terms to the left:

(-2-1)m-(-3)=0

We add all the numbers together, and all the variables

(-3)m-(-3)=0

We add all the numbers together, and all the variables

(-3)m+3=0

We multiply parentheses

-3m+3=0

We move all terms containing m to the left, all other terms to the right

-3m=-3

m=-3/-3

m=1

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