12m+13=5m-8

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Solution for 12m+13=5m-8 equation:


Simplifying
12m + 13 = 5m + -8

Reorder the terms:
13 + 12m = 5m + -8

Reorder the terms:
13 + 12m = -8 + 5m

Solving
13 + 12m = -8 + 5m

Solving for variable 'm'.

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

Add '-5m' to each side of the equation.
13 + 12m + -5m = -8 + 5m + -5m

Combine like terms: 12m + -5m = 7m
13 + 7m = -8 + 5m + -5m

Combine like terms: 5m + -5m = 0
13 + 7m = -8 + 0
13 + 7m = -8

Add '-13' to each side of the equation.
13 + -13 + 7m = -8 + -13

Combine like terms: 13 + -13 = 0
0 + 7m = -8 + -13
7m = -8 + -13

Combine like terms: -8 + -13 = -21
7m = -21

Divide each side by '7'.
m = -3

Simplifying
m = -3

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