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10. Determine whether or not the following are valid. Justify your answer by using either set identities or membership tables. You must use membership tables

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10. Determine whether or not the following are valid. Justify your answer by using either set identities or membership tables. You must use membership tables at least once and vou must use set identities at least once . A, B, and C are sets. (a) (A-B) U (C-B) = (A U C)-B (b) (A-B) U (A-C) A-(B U C)

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