n=20-n

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Solution for n=20-n equation: 


Simplifying
n = 20 + -1n

Solving
n = 20 + -1n

Solving for variable 'n'.

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

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

Combine like terms: n + n = 2n
2n = 20 + -1n + n

Combine like terms: -1n + n = 0
2n = 20 + 0
2n = 20

Divide each side by '2'.
n = 10

Simplifying
n = 10

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