17/7 : 13/7 =
6/11 x 5/3 =
9/5 x 15/8 =
8/11 x 21/8 =
11/12 x 15/8 =
19/6 : 5/4 =
4/11 : 2/9 =
13/4 x 3/4 =
55/32
10/11
17/13
38/15
21/11
39/16
27/8
18/11
