Ответ:

2/7<5/7

2/5<2/3

7/13>7/20

1/15<4/15

4/7>4/10

20/31>7/31

8/15<8/3

3/9<8/9

7/9<1

29/29=1

1<14/11

5/5=11/11

9/10<10/9

28/39<4/3

19/19=49/49

11/12<12/11

1>5/6

1=72/72

1<9/8

38/39<5/4

12/3>13/13

12/5>15/17

15/17<17/17

7/7<18/2

9/18<10/10

6/10>6/20