Any other solution to this inequality ?

Hi everyone !

I found that inequality that i proved , but i wanted another solution .

Show that for all a,b and c positive real numbers , the following inequality holds:

http://latex.codecogs.com/gif.latex?...c{9}{4(a+b+c)}

And please , don't tell me it is pre-calculus ! (Giggle)

Anybody with another solution ?

(if you need mine , say it :D )

**Moderator edit:** Moved from Pre-algebra and Algebra. Closed until OP reads and follows the subforum rules for posting here.