Question: please show how to prove these identities without using a truth table! thanks Let A, B, and C be three sets in a universe U.

please show how to prove these identities without using a truth table! thanks

Let A, B, and C be three sets in a universe U. Show the following identities: a) (AUB) nan ) = (A-B) U (B-A) b) (A-B) UC-B)= (AUC)-B d) (A-B) _ C = (A-C)-(B-C)

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