Question

Помогите с 5,7,9 пожалуйста

Answer 1

Ответ:

Пошаговое объяснение:

5.

20 - 3 8/15 + 10 4/15 =

20 - 13 12/15 = 19 15/15 -

13 12/15 = 6 3/15 = 6 1/5

7.

15 7/11 - 4 9/16 + 3 4/11 =

15 112/176 - 4 99/176 +

3 64/176 = 11 13/176 +

3 64/176 = 14 77/176 =

14 7/16

9.

12 4/13 - 2 13/20 + 3 9/13 = 12 80/260 - 2 169/260 + 3 180/260 =

11 340/260 - 2 169/260 + 3 180/260 = 9 171/260 + 3 180/260 = 12 351/260 = 13 91/260 = 13 7/20