(M+9)+6=

Solution for (M+9)+6= equation:

Simplifying
(M + 9) + 6 = 0

Reorder the terms:
(9 + M) + 6 = 0

Remove parenthesis around (9 + M)
9 + M + 6 = 0

Reorder the terms:
9 + 6 + M = 0

Combine like terms: 9 + 6 = 15
15 + M = 0

Solving
15 + M = 0

Solving for variable 'M'.

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

Add '-15' to each side of the equation.
15 + -15 + M = 0 + -15

Combine like terms: 15 + -15 = 0
0 + M = 0 + -15
M = 0 + -15

Combine like terms: 0 + -15 = -15
M = -15

Simplifying
M = -15