13.8+18.9m=17.2m-15.78

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Solution for 13.8+18.9m=17.2m-15.78 equation: 


Simplifying
13.8 + 18.9m = 17.2m + -15.78

Reorder the terms:
13.8 + 18.9m = -15.78 + 17.2m

Solving
13.8 + 18.9m = -15.78 + 17.2m

Solving for variable 'm'.

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

Add '-17.2m' to each side of the equation.
13.8 + 18.9m + -17.2m = -15.78 + 17.2m + -17.2m

Combine like terms: 18.9m + -17.2m = 1.7m
13.8 + 1.7m = -15.78 + 17.2m + -17.2m

Combine like terms: 17.2m + -17.2m = 0.0
13.8 + 1.7m = -15.78 + 0.0
13.8 + 1.7m = -15.78

Add '-13.8' to each side of the equation.
13.8 + -13.8 + 1.7m = -15.78 + -13.8

Combine like terms: 13.8 + -13.8 = 0.0
0.0 + 1.7m = -15.78 + -13.8
1.7m = -15.78 + -13.8

Combine like terms: -15.78 + -13.8 = -29.58
1.7m = -29.58

Divide each side by '1.7'.
m = -17.4

Simplifying
m = -17.4

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