m+3=12-12-2m

Solution for m+3=12-12-2m equation:

Simplifying
m + 3 = 12 + -12 + -2m

Reorder the terms:
3 + m = 12 + -12 + -2m

Combine like terms: 12 + -12 = 0
3 + m = 0 + -2m
3 + m = -2m

Solving
3 + m = -2m

Solving for variable 'm'.

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

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

Combine like terms: m + 2m = 3m
3 + 3m = -2m + 2m

Combine like terms: -2m + 2m = 0
3 + 3m = 0

Add '-3' to each side of the equation.
3 + -3 + 3m = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 3m = 0 + -3
3m = 0 + -3

Combine like terms: 0 + -3 = -3
3m = -3

Divide each side by '3'.
m = -1

Simplifying
m = -1