please help its urgent Proof that if A is a subset of B then AnB =A by contrapositive statement​

Question

please help its urgent Proof
that
if A is a subset of B then AnB =A by contrapositive statement​

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Gerda 1 year 2021-09-04T10:25:02+00:00 1 Answers 7 views 0

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    2021-09-04T10:26:29+00:00

    Answer:

    yes because of a postulate or a theorem

    Step-by-step explanation:

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