Boolean algebra simplification ?

1. Jan 12, 2013

KaliBanda

1. The problem statement, all variables and given/known data

2. Relevant equations

DeMorgan’s Theorems.

3. The attempt at a solution

I've had a go at it, not sure if I'm heading in the right direction though.

Thanks for any help.

2. Jan 13, 2013

Staff: Mentor

Where does the second + in line 4 come from? I would expect * there, as you had it in line 3.
Anyway, I would use another direction there:
$(\overline{AC})\overline{C}$ has a nice simplification.