1/2 + 1/3 + 1/9 = 17/18 => Uncle gives them his camel, making 18, they take their share of 17 (9 for the son 1, 6 for son 2, 2 for son 3) and he disappears into the sunset on the leftover one, which was probably his one anyway!
Yes, I'm a clever b*st*rd! Not fussed about the piccy of the carnivore ..... hang on, you talking about Jethro?