Verified answer

Ответ:

Пошаговое объяснение:

2 5/6 + (- 3 1/8) - (- 2 7/12) + 4 3/4 - (- 1 2/3) = 2 5/6 - 3 1/8 + 2 7/12 + 4 3/4 + 1 2/3 = 8 17/24

1) 2 5/6 + 2 7/12 = 2 10/12 + 2 7/12 = 4 17/12

2) 4 17/12 + 1 2/3 = 4 17/12 + 1 8/12 = 5 25/12

3) 5 25/12 - 3 1/8 = 5 50/24 - 3 3/24 = 2 47/24 = 3 23/24

4) 3 23/24 + 4 3/4 = 3 23/24 + 4 18/24 = 7 41/24 = 8 17/24