-15m^2-27m-12=0

Solution for -15m^2-27m-12=0 equation:

Simplifying
-15m2 + -27m + -12 = 0

Reorder the terms:
-12 + -27m + -15m2 = 0

Solving
-12 + -27m + -15m2 = 0

Solving for variable 'm'.

Factor out the Greatest Common Factor (GCF), '-3'.
-3(4 + 9m + 5m2) = 0

Factor a trinomial.
-3((1 + m)(4 + 5m)) = 0

Ignore the factor -3.
Subproblem 1
Set the factor '(1 + m)' equal to zero and attempt to solve:

Simplifying
1 + m = 0

Solving
1 + m = 0

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

Add '-1' to each side of the equation.
1 + -1 + m = 0 + -1

Combine like terms: 1 + -1 = 0
0 + m = 0 + -1
m = 0 + -1

Combine like terms: 0 + -1 = -1
m = -1

Simplifying
m = -1
Subproblem 2
Set the factor '(4 + 5m)' equal to zero and attempt to solve:

Simplifying
4 + 5m = 0

Solving
4 + 5m = 0

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

Add '-4' to each side of the equation.
4 + -4 + 5m = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 5m = 0 + -4
5m = 0 + -4

Combine like terms: 0 + -4 = -4
5m = -4

Divide each side by '5'.
m = -0.8

Simplifying
m = -0.8
Solution
m = {-1, -0.8}