9m-3m=21

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Solution for 9m-3m=21 equation: 


Simplifying
9m + -3m = 21

Combine like terms: 9m + -3m = 6m
6m = 21

Solving
6m = 21

Solving for variable 'm'.

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

Divide each side by '6'.
m = 3.5

Simplifying
m = 3.5

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