Ответ:

19 2/7

Пошаговое объяснение:

1) 1/3 + 1/5 = 5/15 + 3/15 = 8/15

2) 8/15 + 1/15 = 9/15 = 3/5

3) 4/5 - 1/3 = 12/15 - 5/15 = 7/15

4) 3/5 : 7/15 = 3/5 * 15/7 = 9/7

5)  1/3 + 1/5 = 5/15 + 3/15 = 8/15

6) 8/15 - 1/2 = 16/30 - 15/30 = 1/30

7) 2/3 - 1/6 = 4/6 - 1/6 = 3/6 = 1/2

8) 1/30 : 1/2 = 1/30 * 2/1 = 1/15

9) 9/7 : 1/15 = 9/7 * 15/1 = 135/7 = 19 2/7

Ответ:

19 2/7

Пошаговое объяснение:

((1/3+1/5+1/15):(4/5-1/3)):((1/3+1/5-1/2):(2/3-1/6))=

((10/30+6/30+2/30):(12/15-5/15)):((10/30+6/30-15/30):(4/6-1/6))=

(18/30:7/15):(1/30:3/6)=18/14:1/15=135/7=19 2/7