(12m+6)-(3m-9)=

Solution for (12m+6)-(3m-9)= equation:

Simplifying
(12m + 6) + -1(3m + -9) = 0

Reorder the terms:
(6 + 12m) + -1(3m + -9) = 0

Remove parenthesis around (6 + 12m)
6 + 12m + -1(3m + -9) = 0

Reorder the terms:
6 + 12m + -1(-9 + 3m) = 0
6 + 12m + (-9 * -1 + 3m * -1) = 0
6 + 12m + (9 + -3m) = 0

Reorder the terms:
6 + 9 + 12m + -3m = 0

Combine like terms: 6 + 9 = 15
15 + 12m + -3m = 0

Combine like terms: 12m + -3m = 9m
15 + 9m = 0

Solving
15 + 9m = 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 + 9m = 0 + -15

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

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

Divide each side by '9'.
m = -1.666666667

Simplifying
m = -1.666666667