Excuse me,how to do this type of question?
Using the laws of the algebra of sets show that
(a-b)∩(a∩b)'=a∩b'
Hello mayThis uses the Distributive Law:where I have replaced by , by and by .
Yes, I'm rather afraid that you do. As I said - you'll need lots of practice!
Grandad
PS ... and to answer your extra question, following your edit:
uses what I have always known as an Identity Law, but others sometimes refer to as a Domination Law.
See, for example, here.