10-n=9-n

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Solution for 10-n=9-n equation: 


Simplifying
10 + -1n = 9 + -1n

Add 'n' to each side of the equation.
10 + -1n + n = 9 + -1n + n

Combine like terms: -1n + n = 0
10 + 0 = 9 + -1n + n
10 = 9 + -1n + n

Combine like terms: -1n + n = 0
10 = 9 + 0
10 = 9

Solving
10 = 9

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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