Comparing Two mixed numbers, Arrange in Ascending order.

2/3,5/6,4/9,2/9

Rewrite all fractions such that their denominators are the same, by getting their least common denominator (LCD). Their LCD is 18, therefore,

2/3 = 12/18
5/6 = 15/18
4/9 = 8/18
2/9 = 4/18

Now arrange it in ascending order.
Hope this helps~ :3