2m-7m=30

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Solution for 2m-7m=30 equation: 


Simplifying
2m + -7m = 30

Combine like terms: 2m + -7m = -5m
-5m = 30

Solving
-5m = 30

Solving for variable 'm'.

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

Divide each side by '-5'.
m = -6

Simplifying
m = -6

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