-3(-m)=12

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Solution for -3(-m)=12 equation: 


Simplifying
-3(-1m) = 12

Remove parenthesis around (-1m)
-3 * -1m = 12

Multiply -3 * -1
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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