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Ответ:

Пошаговое объяснение:

А)

2/11х = 4/9

х = 4/9 : 2/11

х = 4/9 * 11/2

х = 44/18

х = 22/9

х = 2. 4/9

Б)

1. 3/4у = 2. 2/7

у = 2. 2/7 : 1. 3/4

у = 16/7 : 7/4

у = 16/7 * 4/7

х = 64/49

x = 1. 15/49

В)

12z - 3z = 3/5

9z = 3/5

z = 3/5 : 9

z = 3/5 * 1/9

z = 3/45

z = 1/15