-9(-5d-12)-9d=-18d

Solution for -9(-5d-12)-9d=-18d equation:

Simplifying
-9(-5d + -12) + -9d = -18d

Reorder the terms:
-9(-12 + -5d) + -9d = -18d
(-12 * -9 + -5d * -9) + -9d = -18d
(108 + 45d) + -9d = -18d

Combine like terms: 45d + -9d = 36d
108 + 36d = -18d

Solving
108 + 36d = -18d

Solving for variable 'd'.

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

Add '18d' to each side of the equation.
108 + 36d + 18d = -18d + 18d

Combine like terms: 36d + 18d = 54d
108 + 54d = -18d + 18d

Combine like terms: -18d + 18d = 0
108 + 54d = 0

Add '-108' to each side of the equation.
108 + -108 + 54d = 0 + -108

Combine like terms: 108 + -108 = 0
0 + 54d = 0 + -108
54d = 0 + -108

Combine like terms: 0 + -108 = -108
54d = -108

Divide each side by '54'.
d = -2

Simplifying
d = -2