Let A and B be sets, if A interesectionX = B intersection X= Null set. And A U X = B U X for some set X. Show that A=B Share with your friends Share 0 Rajat Sethi answered this Given, for two sets A and B,A∩X=B∩X=∅Now, A∪X=B∪X⇒A+X-A∩X=B+X-B∩X⇒A+X-∅=B+X-∅⇒A=B -1 View Full Answer