# Math Help - Set exercise

1. ## Set exercise

Hello

Is this correct?

[(AUBUC)∩(AUB)]-[(AU(B-C))∩A] = CUB

Thanks

2. The Venn diagrams do not seem to bear that conclusion out. I think you can see that

$(A\cup B\cup C)\cap(A\cup B)=A\cup B$.

Can you similarly simplify $A\cup(B-C))\cap A$?