(n-1)+n=5

Solution for (n-1)+n=5 equation:

Simplifying
(n + -1) + n = 5

Reorder the terms:
(-1 + n) + n = 5

Remove parenthesis around (-1 + n)
-1 + n + n = 5

Combine like terms: n + n = 2n
-1 + 2n = 5

Solving
-1 + 2n = 5

Solving for variable 'n'.

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

Add '1' to each side of the equation.
-1 + 1 + 2n = 5 + 1

Combine like terms: -1 + 1 = 0
0 + 2n = 5 + 1
2n = 5 + 1

Combine like terms: 5 + 1 = 6
2n = 6

Divide each side by '2'.
n = 3

Simplifying
n = 3