Ответ:

½ → 9/20 , 55/77 → 25/80 ,

Пошаговое объяснение:

1) ½= 10/20

10/20 → 9/20

½→9/20

2) 55/77= 5/7

25/80 = 5/16

5/7→5/16

55/77→25/80

3) 26/78= 13/34 = 26/68

34/136 = 17/68

26/68 ← 34/68

26/68 ← 34/136

4) 9/26 = 99/286

11/39 = 99/ 351

99/286 → 99/351

9/26 → 11/39

Ответ:

1) 2/5 и 9/20 = 8/20 и 9/20 = 2/5 < 9/20

2) 55/77 и 25/80 = 4000/6160 и 2000/6160 = 55/77 > 25/80

3) 26/78 и 34/136 = 4896/10608 и 4624/10608 = 26/78 > 34/136

4) 9/26 и 11/39 = 27/78 и 22/78 = 9/26 > 11/39

Пошаговое объяснение:

Ответ