I was doing the following question.
illustrate the following using a venn diagram
A – B = ~(~A ∪ B) where as usual A-B={x : x ∈ A & x ∉ B}
I got the following.

But surely A-B should look like this?

I'm really unsure about the steps I have to take to get to each step.
Could someone explain please?
Thanks!
