3m+6+2m=21

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Solution for 3m+6+2m=21 equation: 


Simplifying
3m + 6 + 2m = 21

Reorder the terms:
6 + 3m + 2m = 21

Combine like terms: 3m + 2m = 5m
6 + 5m = 21

Solving
6 + 5m = 21

Solving for variable 'm'.

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

Add '-6' to each side of the equation.
6 + -6 + 5m = 21 + -6

Combine like terms: 6 + -6 = 0
0 + 5m = 21 + -6
5m = 21 + -6

Combine like terms: 21 + -6 = 15
5m = 15

Divide each side by '5'.
m = 3

Simplifying
m = 3

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