3m-21=-31+m

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Solution for 3m-21=-31+m equation:


Simplifying
3m + -21 = -31 + m

Reorder the terms:
-21 + 3m = -31 + m

Solving
-21 + 3m = -31 + m

Solving for variable 'm'.

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

Add '-1m' to each side of the equation.
-21 + 3m + -1m = -31 + m + -1m

Combine like terms: 3m + -1m = 2m
-21 + 2m = -31 + m + -1m

Combine like terms: m + -1m = 0
-21 + 2m = -31 + 0
-21 + 2m = -31

Add '21' to each side of the equation.
-21 + 21 + 2m = -31 + 21

Combine like terms: -21 + 21 = 0
0 + 2m = -31 + 21
2m = -31 + 21

Combine like terms: -31 + 21 = -10
2m = -10

Divide each side by '2'.
m = -5

Simplifying
m = -5

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