1/2 × 2/3 = 1/3
6/7 × 5/8 = 15/28
9/10 × 10/11 = 9/11
13/15 × 15/17 = 13/17
14/15 × 5/42 = 1/9
13/15 × 45/26 = 3/2
15/28 × 7/30 = 7/40
35/51 × 17/15 = 119/85
1/2 × 2/3 = 1/3
6/7 × 5/8 = 15/28
9/10 × 10/11 = 9/11
13/15 × 15/17 = 13/17
14/15 × 5/42 = 1/9
13/15 × 45/26 = 3/2
15/28 × 7/30 = 7/40
35/51 × 17/15 = 119/85