3m-8m+3m+9m-12m=15

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Solution for 3m-8m+3m+9m-12m=15 equation: 


Simplifying
3m + -8m + 3m + 9m + -12m = 15

Combine like terms: 3m + -8m = -5m
-5m + 3m + 9m + -12m = 15

Combine like terms: -5m + 3m = -2m
-2m + 9m + -12m = 15

Combine like terms: -2m + 9m = 7m
7m + -12m = 15

Combine like terms: 7m + -12m = -5m
-5m = 15

Solving
-5m = 15

Solving for variable 'm'.

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

Divide each side by '-5'.
m = -3

Simplifying
m = -3

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