3m-9+4m+15=-22

Solution for 3m-9+4m+15=-22 equation:

Simplifying
3m + -9 + 4m + 15 = -22

Reorder the terms:
-9 + 15 + 3m + 4m = -22

Combine like terms: -9 + 15 = 6
6 + 3m + 4m = -22

Combine like terms: 3m + 4m = 7m
6 + 7m = -22

Solving
6 + 7m = -22

Solving for variable 'm'.

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

Add '-6' to each side of the equation.
6 + -6 + 7m = -22 + -6

Combine like terms: 6 + -6 = 0
0 + 7m = -22 + -6
7m = -22 + -6

Combine like terms: -22 + -6 = -28
7m = -28

Divide each side by '7'.
m = -4

Simplifying
m = -4