3+3m+5m=21

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Solution for 3+3m+5m=21 equation: 


Simplifying
3 + 3m + 5m = 21

Combine like terms: 3m + 5m = 8m
3 + 8m = 21

Solving
3 + 8m = 21

Solving for variable 'm'.

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

Add '-3' to each side of the equation.
3 + -3 + 8m = 21 + -3

Combine like terms: 3 + -3 = 0
0 + 8m = 21 + -3
8m = 21 + -3

Combine like terms: 21 + -3 = 18
8m = 18

Divide each side by '8'.
m = 2.25

Simplifying
m = 2.25

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