7. If A and B are subsets of a set X, then what is
An (x - B); B equal to?
(2) AUB (6) AnB
(C) A
(d) B
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A∩(X−B)=A−(A∩B)
A∩(X−B)∪B=[A−(A∩B]∪B
=A∪B
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