-m=-2m-4

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Solution for -m=-2m-4 equation: 



-m=-2m-4

We move all terms to the left:

-m-(-2m-4)=0

We add all the numbers together, and all the variables

-1m-(-2m-4)=0

We get rid of parentheses

-1m+2m+4=0

We add all the numbers together, and all the variables

m+4=0

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

m=-4

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