Ответ:

20.52

1. 92/7 = 13 1/7

67/13 = 5 2/13

98/11 = 8 10/11

73/7 = 10 3/7

68/15 = 4 8/15

2. 100/8 = 12 4/8

204/39 = 5 9/39

678/134 = 5 8/134

924/92 = 10 4/92

1009/125 = 8 9/125

1634/54 =  30 14/54

20.53

20/8 = 5/2 = 2 1/2

42/30 = 7/5 = 1 2/5

297/90 = 99/30 = 3 9/30

166/36 = незнаю как сократить(, но будет 4 11/18

84/48 = 7/4 = 1 3/4

118/20 = 59/10 = 5 9/10

20.54

8/5 = 1 3/5

17/4 = 4 1/4

6/23 = 3 5/6

88/10 = 8 8/10

23/233 = 10 3/23

365/18 = 20 5/18

50/507 = 10 7/50

437/100 = 4 37/100

531/10 = 53 1/10