7-n=21+3-n

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Solution for 7-n=21+3-n equation: 


Simplifying
7 + -1n = 21 + 3 + -1n

Combine like terms: 21 + 3 = 24
7 + -1n = 24 + -1n

Add 'n' to each side of the equation.
7 + -1n + n = 24 + -1n + n

Combine like terms: -1n + n = 0
7 + 0 = 24 + -1n + n
7 = 24 + -1n + n

Combine like terms: -1n + n = 0
7 = 24 + 0
7 = 24

Solving
7 = 24

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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