Discrete Math simplify (A-B)^(c) intersection A?

Having some trouble simplifying this one.





(A-B)^c intersection A





c=complement

Discrete Math simplify (A-B)^(c) intersection A?
(A-B)^c П A


= (A П (B)^c)^c П A


= (A^c U B) П A


= (A^c П A) U (B П A)


= null U (B П A)


= B П A

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