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Math Help - Let A and B be subsets of some universal set U. Prove or disprove each of...

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    Let A and B be subsets of some universal set U. Prove or disprove each of...

    the following:

    1) (A complement U B) (entire thing complemented) (intersect A) = A-B

    2) (A U B) - A = B - A
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    Re: Let A and B be subsets of some universal set U. Prove or disprove each of...

    Quote Originally Posted by Brjakewa View Post
    the following:
    1) (A complement U B) (entire thing complemented) (intersect A) = A-B
    \begin{gathered}  \overline {\left( {\overline A  \cup B} \right)}  \cap A \hfill \\  \left( {A \cap \overline B } \right) \cap A \hfill \\  \left( {A \cap \overline B } \right) \hfill \\  A\backslash B \hfill \\ \end{gathered}
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