Ответ:

Пошаговое объяснение:

2)

(5/12 - х) : 1/2 = 2/9

5/12 - х = 2/9 * 1/2

5/12 - х = 2/18

х = 5/12 - 2/18

х = 15/36 - 4/36

х = 11/36

4)

4/15 - (у + 3/25) = 1/25

у + 3/25 = 4/15 - 1/25

у + 9/75 = 20/75 - 3/75

у + 9/75 = 17/75

у = 17/75 - 9/75

у = 8/75

6)

3. 1/16 : (х - 5/16) = 7/8

х - 5/16 = 3. 1/16 : 7/8

х - 5/16 = 49/16 * 8/7

х - 5/16 = 7/2 * 1/1

х - 5/16 = 7/2

х - 5/16 = 3. 1/2

х = 3. 1/2 + 5/16

х = 3. 8/16 + 5/16

х = 3. 13/16