-m-2m=12

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Solution for -m-2m=12 equation: 


Simplifying
-1m + -2m = 12

Combine like terms: -1m + -2m = -3m
-3m = 12

Solving
-3m = 12

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Divide each side by '-3'.
m = -4

Simplifying
m = -4

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