By direct proof, prove that B - A = B ∩ Ac.
Added by Elisa W.
Step 1
First, let's prove that B − A is a subset of B ∩ A c: Suppose x is an element of B − A. This means that x is in B but not in A. Therefore, x is not in A complement, since A complement contains all elements that are not in A. Hence, x is not in A complement, Show more…
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