21m-13m+15=31

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Solution for 21m-13m+15=31 equation:


Simplifying
21m + -13m + 15 = 31

Reorder the terms:
15 + 21m + -13m = 31

Combine like terms: 21m + -13m = 8m
15 + 8m = 31

Solving
15 + 8m = 31

Solving for variable 'm'.

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

Add '-15' to each side of the equation.
15 + -15 + 8m = 31 + -15

Combine like terms: 15 + -15 = 0
0 + 8m = 31 + -15
8m = 31 + -15

Combine like terms: 31 + -15 = 16
8m = 16

Divide each side by '8'.
m = 2

Simplifying
m = 2

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