(n-9)*3=15

Solution for (n-9)*3=15 equation:

Simplifying
(n + -9) * 3 = 15

Reorder the terms:
(-9 + n) * 3 = 15

Reorder the terms for easier multiplication:
3(-9 + n) = 15
(-9 * 3 + n * 3) = 15
(-27 + 3n) = 15

Solving
-27 + 3n = 15

Solving for variable 'n'.

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

Add '27' to each side of the equation.
-27 + 27 + 3n = 15 + 27

Combine like terms: -27 + 27 = 0
0 + 3n = 15 + 27
3n = 15 + 27

Combine like terms: 15 + 27 = 42
3n = 42

Divide each side by '3'.
n = 14

Simplifying
n = 14