12+m=20-3m

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Solution for 12+m=20-3m equation:


Simplifying
12 + m = 20 + -3m

Solving
12 + m = 20 + -3m

Solving for variable 'm'.

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

Add '3m' to each side of the equation.
12 + m + 3m = 20 + -3m + 3m

Combine like terms: m + 3m = 4m
12 + 4m = 20 + -3m + 3m

Combine like terms: -3m + 3m = 0
12 + 4m = 20 + 0
12 + 4m = 20

Add '-12' to each side of the equation.
12 + -12 + 4m = 20 + -12

Combine like terms: 12 + -12 = 0
0 + 4m = 20 + -12
4m = 20 + -12

Combine like terms: 20 + -12 = 8
4m = 8

Divide each side by '4'.
m = 2

Simplifying
m = 2

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