9-n=4-n

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Solution for 9-n=4-n equation: 


Simplifying
9 + -1n = 4 + -1n

Add 'n' to each side of the equation.
9 + -1n + n = 4 + -1n + n

Combine like terms: -1n + n = 0
9 + 0 = 4 + -1n + n
9 = 4 + -1n + n

Combine like terms: -1n + n = 0
9 = 4 + 0
9 = 4

Solving
9 = 4

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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