m+15=3m-9

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Solution for m+15=3m-9 equation:


Simplifying
m + 15 = 3m + -9

Reorder the terms:
15 + m = 3m + -9

Reorder the terms:
15 + m = -9 + 3m

Solving
15 + m = -9 + 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.
15 + m + -3m = -9 + 3m + -3m

Combine like terms: m + -3m = -2m
15 + -2m = -9 + 3m + -3m

Combine like terms: 3m + -3m = 0
15 + -2m = -9 + 0
15 + -2m = -9

Add '-15' to each side of the equation.
15 + -15 + -2m = -9 + -15

Combine like terms: 15 + -15 = 0
0 + -2m = -9 + -15
-2m = -9 + -15

Combine like terms: -9 + -15 = -24
-2m = -24

Divide each side by '-2'.
m = 12

Simplifying
m = 12

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