Решение на бумаге, срочно

Ответ:

1 - 3/8 = 5/8

1 - 1/3 = 2/3

1 3/5 * 3 1/3 = 4/5 * 1/3 = 4/15

5/8 * 2/3 = 10/24 = 5/12

4/15 + 5/12 = 123/180

1 3/16 * 8 - 2 1/42 * 2 6/17 - 1 11/28 * 1 3/13

1 3/16 * 8 = 9 8/16

2 1/42 * 2 6/17 = 2/42 * 12/17 = 4 24/714 = 4 4/119

1 11/28 * 1 3/13 = 11/28 * 3/13 = 1 33/364

9 8/16 - 4 4/119 = 8/16 - 4/119 = 4 888/1904 = 4 111/238

4 111/238 - 1 33/364 = 111/238 - 33/364 = 3 2325/6188