Question

prove that (AUB)-A
=B-A​

Answer 1

Answer:

Let x be an arbitrary element of AUB -A. Then,

x belongs to AUB-A

SO x is a subset of AUB-A

x is a subset of AUB and x is not a subset of A

so x is a subset of A and x is a sub set of B

Hence ,AUB-A=B-A.