-6+4m+5m=21

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Solution for -6+4m+5m=21 equation: 


Simplifying
-6 + 4m + 5m = 21

Combine like terms: 4m + 5m = 9m
-6 + 9m = 21

Solving
-6 + 9m = 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 + 9m = 21 + 6

Combine like terms: -6 + 6 = 0
0 + 9m = 21 + 6
9m = 21 + 6

Combine like terms: 21 + 6 = 27
9m = 27

Divide each side by '9'.
m = 3

Simplifying
m = 3

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