$ A \cup (C \setminus A) \cup (A \cap B \cap C) = A \cup (C \cap \overline{A}) \cup (A \cap B \cap C) = A \cup C \cup (A \cap B \cap C) = ??. $
I have got this far, but have no idea now to continue.
I hope someone who is more seasoned in propositional calculus can help me.
Thanks in advance.