N-20=20-n

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Solution for N-20=20-n equation: 


Simplifying
N + -20 = 20 + -1n

Reorder the terms:
-20 + N = 20 + -1n

Solving
-20 + N = 20 + -1n

Solving for variable 'N'.

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

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

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

Combine like terms: 20 + 20 = 40
N = 40 + -1n

Simplifying
N = 40 + -1n

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