15+7m=-5m-21

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Solution for 15+7m=-5m-21 equation:


Simplifying
15 + 7m = -5m + -21

Reorder the terms:
15 + 7m = -21 + -5m

Solving
15 + 7m = -21 + -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.
15 + 7m + 5m = -21 + -5m + 5m

Combine like terms: 7m + 5m = 12m
15 + 12m = -21 + -5m + 5m

Combine like terms: -5m + 5m = 0
15 + 12m = -21 + 0
15 + 12m = -21

Add '-15' to each side of the equation.
15 + -15 + 12m = -21 + -15

Combine like terms: 15 + -15 = 0
0 + 12m = -21 + -15
12m = -21 + -15

Combine like terms: -21 + -15 = -36
12m = -36

Divide each side by '12'.
m = -3

Simplifying
m = -3

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