Order from greatest to least: 2 6/8, 1 7/12, 2 5/6

2 5/6, 2 6/8 1 7/12 is the way you would order it.

Let's find a common denominator to make it simpler.

A common denominator: 4

8 x 3 = 24    6 x 3 = 18   2 18/24

12 x 2 = 24   7 x 3 = 21    1 21/24

6 x 4 = 24     5 x 4 = 20   2 20/24
 
 So, your answer is 2 5/6, 2 6/8, 1 7/12

Glad I could help, and good luck!

AnonymousGiantsFam