Verified answer

Ответ:

10,5 ; 1,5

Пошаговое объяснение:

(1 2/7y - 1/2) / 2,5 = 5,2

1 2/7y - 1/2 = 5,2 * 2,5

1 2/7y - 1/2 = 13

9/7y = 13 +1/2

9/7y = 13 1/2

9/7y = 27/2

y = 27/2 / 9/7

y = 27/2 * 7/9

y = 21/2 = 10,5

y = 10,5

22 * (17/26x - 3/4) = 5 1/13

17/26x - 3/4 = 5 1/13 /22

17/26x - 3/4 = 3/13

17/26x = 3/13 + 3/4

17/26x = 51/52

x = 51/52 / 17/26

x = 51/52 * 26/17

x = 1 1/2 = 1,5

x = 1,5

Ответ:

Пошаговое объяснение:

№2

(1. 2/7у - 1/2) : 2,5 = 5,2

1. 2/7у - 1/2 = 5,2 * 2,5

1. 2/7у - 1/2 = 13

1. 2/7у = 13 + 1/2

1. 2/7у = 13. 1/2

9/7у = 27/2

у = 27/2 : 9/7

у = 27/2 * 7/9

у = 3/2 * 7/1

у = 21/2

у = 10. 1/2 или 10,5

№4

22 * (17/26х - 3/4) = 5. 1/13

17/26х - 3/4 = 5. 1/13 : 22

17/26х - 3/4 = 66/13 * 1/22

17/26х - 3/4 = 3/13 * 1/1

17/26х - 3/4 = 3/13

17/26х = 3/13 + 3/4

17/26х = 12/52 + 39/52

17/26х = 51/52

х = 51/52 : 17/26

х = 51/52 * 26/17

х = 3/2 * 1/1

х = 3/2

х = 1. 1/2