(13-x)-(13-x)=0

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Solution for (13-x)-(13-x)=0 equation: 


Simplifying
(13 + -1x) + -1(13 + -1x) = 0

Remove parenthesis around (13 + -1x)
13 + -1x + -1(13 + -1x) = 0
13 + -1x + (13 * -1 + -1x * -1) = 0
13 + -1x + (-13 + 1x) = 0

Reorder the terms:
13 + -13 + -1x + 1x = 0

Combine like terms: 13 + -13 = 0
0 + -1x + 1x = 0
-1x + 1x = 0

Combine like terms: -1x + 1x = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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