HI GUYS

I'm really new 2 Boolean algebra and i just need help with
simplifying this equation F=(ab)(cd')(a')
I know its really easy but i just dont know wat to do first.
Please Help

 

Hint One: "Commutative Law" http://www.allaboutcircuits.com/vol_4/chpt_7/4.html

Hint Two: (a)(a')=?