(n+1)+(n+2)=

Solution for (n+1)+(n+2)= equation:

Simplifying
(n + 1) + (n + 2) = 0

Reorder the terms:
(1 + n) + (n + 2) = 0

Remove parenthesis around (1 + n)
1 + n + (n + 2) = 0

Reorder the terms:
1 + n + (2 + n) = 0

Remove parenthesis around (2 + n)
1 + n + 2 + n = 0

Reorder the terms:
1 + 2 + n + n = 0

Combine like terms: 1 + 2 = 3
3 + n + n = 0

Combine like terms: n + n = 2n
3 + 2n = 0

Solving
3 + 2n = 0

Solving for variable 'n'.

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

Add '-3' to each side of the equation.
3 + -3 + 2n = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 2n = 0 + -3
2n = 0 + -3

Combine like terms: 0 + -3 = -3
2n = -3

Divide each side by '2'.
n = -1.5

Simplifying
n = -1.5