2(n+1)+n+4=-30

Solution for 2(n+1)+n+4=-30 equation:

Simplifying
2(n + 1) + n + 4 = -30

Reorder the terms:
2(1 + n) + n + 4 = -30
(1 * 2 + n * 2) + n + 4 = -30
(2 + 2n) + n + 4 = -30

Reorder the terms:
2 + 4 + 2n + n = -30

Combine like terms: 2 + 4 = 6
6 + 2n + n = -30

Combine like terms: 2n + n = 3n
6 + 3n = -30

Solving
6 + 3n = -30

Solving for variable 'n'.

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

Add '-6' to each side of the equation.
6 + -6 + 3n = -30 + -6

Combine like terms: 6 + -6 = 0
0 + 3n = -30 + -6
3n = -30 + -6

Combine like terms: -30 + -6 = -36
3n = -36

Divide each side by '3'.
n = -12

Simplifying
n = -12