Hi I have to simply this eqn X=A'B'C'+A'BC'+A'BC+ABC using K-maps and I have to verify the simplified equation by Boolean Algebra. The answer I got for the K-maps is=A'C'+BC. So I tried with using Boolean Algebra I was able to get the same answer. But if I take (A'B'C'+ABC) = 1, I would get a different answer. My question really is (A'B'C'+ABC) = 1 correct?