12=2n-2n

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Solution for 12=2n-2n equation: 


Simplifying
12 = 2n + -2n

Combine like terms: 2n + -2n = 0
12 = 0

Solving
12 = 0

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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