N+n+1+n+2=60

Solution for N+n+1+n+2=60 equation:

Simplifying
N + n + 1 + n + 2 = 60

Reorder the terms:
1 + 2 + N + n + n = 60

Combine like terms: 1 + 2 = 3
3 + N + n + n = 60

Combine like terms: n + n = 2n
3 + N + 2n = 60

Solving
3 + N + 2n = 60

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 + N + -3 + 2n = 60 + -3

Reorder the terms:
3 + -3 + N + 2n = 60 + -3

Combine like terms: 3 + -3 = 0
0 + N + 2n = 60 + -3
N + 2n = 60 + -3

Combine like terms: 60 + -3 = 57
N + 2n = 57

Add '-2n' to each side of the equation.
N + 2n + -2n = 57 + -2n

Combine like terms: 2n + -2n = 0
N + 0 = 57 + -2n
N = 57 + -2n

Simplifying
N = 57 + -2n