Ответ:

Пошаговое объяснение:

12 - 1\7  = 11 7/7 - 1/7 = 11 6/7

21 - 4\13  = 20 13/13 - 4/13 = 20 9/13

45 - 23\43  = 44 43/43 - 23/43 = 44 20/43

13 - 41\70  = 12 70/70 - 41/70 = 12 29/70

36 - 7\53  = 35 53/53 - 7/53 = 35 46/53

35 - 34\71  = 34 71/71 - 34/71 = 34 37/71

46 - 53\62 = 45 62/62 - 53/62 = 45 9/62

12-1/7=11 1/1-1/7=11 7/7-1/7=11 6/7

21-4/13=20 1/1-4/13=20 13/13-4/13=20 9/13

45-23/43=44 1/1-23/43=44 43/43-23/43=44 20/43

13-41/70=12 1/1-41/70=12 70/70-41/70=12 29/70

36-7/53=35 1/1-7/53=35 53/53-7/53=35 46/53

35-34/71=34 1/1-34/71=34 71/71-34/71=34 37/71

46-53/62=45 1/1-53/62=45 62/62-53/62=45 9/62