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

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


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

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

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

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

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

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

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

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

Solving
-3 + N + 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 + N + 3 + 2n = 0 + 3

Reorder the terms:
-3 + 3 + N + 2n = 0 + 3

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

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

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

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

Simplifying
N = 3 + -2n

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