2m+3+m-1+m+9=180

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Solution for 2m+3+m-1+m+9=180 equation: 


Simplifying
2m + 3 + m + -1 + m + 9 = 180

Reorder the terms:
3 + -1 + 9 + 2m + m + m = 180

Combine like terms: 3 + -1 = 2
2 + 9 + 2m + m + m = 180

Combine like terms: 2 + 9 = 11
11 + 2m + m + m = 180

Combine like terms: 2m + m = 3m
11 + 3m + m = 180

Combine like terms: 3m + m = 4m
11 + 4m = 180

Solving
11 + 4m = 180

Solving for variable 'm'.

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

Add '-11' to each side of the equation.
11 + -11 + 4m = 180 + -11

Combine like terms: 11 + -11 = 0
0 + 4m = 180 + -11
4m = 180 + -11

Combine like terms: 180 + -11 = 169
4m = 169

Divide each side by '4'.
m = 42.25

Simplifying
m = 42.25

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