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Using any method, show that for all sets A and B which are subsets of a...

Using any method, show that for all sets A and B which are subsets of a universe U,

that

A − (A − B) = A ∩ B.

Note. No proofs by Venn diagram will be accepted.** Algebraic Prove should be good.

Math   Advanced-Math   
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Now

  

Hence Proved

     

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