n=(2s-1)+(s-1)

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

Simplifying
n = (2s + -1) + (s + -1)

Reorder the terms:
n = (-1 + 2s) + (s + -1)

Remove parenthesis around (-1 + 2s)
n = -1 + 2s + (s + -1)

Reorder the terms:
n = -1 + 2s + (-1 + s)

Remove parenthesis around (-1 + s)
n = -1 + 2s + -1 + s

Reorder the terms:
n = -1 + -1 + 2s + s

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

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

Solving
n = -2 + 3s

Solving for variable 'n'.

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

Simplifying
n = -2 + 3s