=(n-1)+n+(n+1)

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

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

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

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

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

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

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

Combine like terms: -1 + 1 = 0
0 = 0 + n + n + n
0 = n + n + n

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

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

Solving
0 = 3n

Solving for variable 'n'.

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

Add '-3n' to each side of the equation.
0 + -3n = 3n + -3n
Remove the zero:
-3n = 3n + -3n

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

Divide each side by '-3'.
n = 0

Simplifying
n = 0