2m-7m+8m=15

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Solution for 2m-7m+8m=15 equation: 


Simplifying
2m + -7m + 8m = 15

Combine like terms: 2m + -7m = -5m
-5m + 8m = 15

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

Solving
3m = 15

Solving for variable 'm'.

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

Divide each side by '3'.
m = 5

Simplifying
m = 5

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