Помогите пожалуйста решить.
№464 (1-4 пример)
Примеры на фотографии

1)

2 2/11x = 1 3/4 + 5/16

2 2/11x = 1 12/16 + 5/16

2 2/11x = 1 17/16

x = 1 17/16 : 2 2/11

x = 33/16 * 11/24

x = 121/128

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2)

4 2/9x =6 11/21 - 3 5/14

4 2/9x = 6 22/42 - 3 15/42

4 2/9x = 3 7/42 = 3 1/6

x = 3 1/6 : 4 2/9

x = 19/6 * 9/38

x = 3/4

============

3)

14/27x = 11/18 - 5/12

14/27x = 22/36 - 15/36

14/27x = 7/36

x = 7/36 * 27/14

x = 3/8

============

4)

20/60x + 15/60x + 12/60x = 1 19/75

47/60x = 1 19/75

x = 1 19/75 : 47/60

x = 94/75 * 60/47

x = 8/5

x = 1 3/5