Why are the equations w - x + x = w and w + x - x = w called identities?

asked Mar 27, 2017 137k views

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Identities have the same solution, and they are also called 'infinities'. That is because they include many solutions.

John Li answered Mar 28, 2017

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They are indentical because the only thing that switched was the addition sign, and subtraction sign. If you look closely.

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