n+m+N=20

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Solution for n+m+N=20 equation: 


Simplifying
n + m + N = 20

Reorder the terms:
N + m + n = 20

Solving
N + m + n = 20

Solving for variable 'N'.

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

Add '-1m' to each side of the equation.
N + m + -1m + n = 20 + -1m

Combine like terms: m + -1m = 0
N + 0 + n = 20 + -1m
N + n = 20 + -1m

Add '-1n' to each side of the equation.
N + n + -1n = 20 + -1m + -1n

Combine like terms: n + -1n = 0
N + 0 = 20 + -1m + -1n
N = 20 + -1m + -1n

Simplifying
N = 20 + -1m + -1n

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