Ответ:

4

Пошаговое объяснение:

1) 2 2/7 * 0,7 = 16/7 * 7/10 = 8/1 * 1/5 = 8/5 = 1,6

2) 3,2 + 1,6 = 4,8

3) 0,6 - 1/3 = 6/10 - 1/3 = 18/30 - 10/30 = 8/30 = 4/15

4) 4,8 : 4/15 = 48/10 * 15/4 = 12/2 * 3/1 = 36/2 = 18

5) 3,8 - 2 1/6 = 3 8/10 - 2 1/6 = 3 24/30 - 2 5/30 = 1 19/30

6) 1 19/30 : 1,4 = 49/30 : 14/10 = 49/30 * 10/14 = 7/3 * 1/2 = 7/6

7) 5. 8/15 - 3 1/5 = 5 8/15 - 3 3/15 = 2 5/15 = 2 1/3

8) 7/6 : 2 1/3 = 7/6 : 7/3 = 7/6 * 3/7 = 1/2 * 1/1 = 1/2

9) 18 - 1/2 = 17 2/2 - 1/2 = 17 1/2

10) 17 1/2 : 4 3/8 = 35/2 : 35/8 = 35/2 * 8/35 = 1/1 * 4/1 = 4/1 = 4