6(n+-18)+3n=0

Solution for 6(n+-18)+3n=0 equation:

Simplifying
6(n + -18) + 3n = 0

Reorder the terms:
6(-18 + n) + 3n = 0
(-18 * 6 + n * 6) + 3n = 0
(-108 + 6n) + 3n = 0

Combine like terms: 6n + 3n = 9n
-108 + 9n = 0

Solving
-108 + 9n = 0

Solving for variable 'n'.

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

Add '108' to each side of the equation.
-108 + 108 + 9n = 0 + 108

Combine like terms: -108 + 108 = 0
0 + 9n = 0 + 108
9n = 0 + 108

Combine like terms: 0 + 108 = 108
9n = 108

Divide each side by '9'.
n = 12

Simplifying
n = 12