(n+5)*3=42

Solution for (n+5)*3=42 equation:

Simplifying
(n + 5) * 3 = 42

Reorder the terms:
(5 + n) * 3 = 42

Reorder the terms for easier multiplication:
3(5 + n) = 42
(5 * 3 + n * 3) = 42
(15 + 3n) = 42

Solving
15 + 3n = 42

Solving for variable 'n'.

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

Add '-15' to each side of the equation.
15 + -15 + 3n = 42 + -15

Combine like terms: 15 + -15 = 0
0 + 3n = 42 + -15
3n = 42 + -15

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

Divide each side by '3'.
n = 9

Simplifying
n = 9