Ответ:

Пошаговое объяснение:

1)x:11 3/7=1 1/20

x = 1 1/20 * 11 3/7

x = 21/20 * 80/7

x = 12

2)x:7 5/9=27/34

x = 27/34 * 7 5/9

x = 27/34 * 68/9

x = 6

3)x:4 3/4=2 3/19

x = 2 3/19 * 4 3/4

x = 41/19 * 19/4

x = 41/4

x = 10 1/4

4)9 2/7:x=1 6/7

x = 9 2/7 : 1 6/7

x = 65/7 : 13/7

x = 65/7 * 7/13

x = 5

5)10 2/13:x=1 7/26

x = 10 2/13 : 1 7/26

x = 132/13 : 33/26

x = 132/13 * 26/33

x = 8

6)12 1/7:x=2 3/7

x = 12 1/7 : 2 3/7

x = 85/7 : 17/7

x = 85/7 * 7/17

x = 5