Вычеслить (2 2/3+4 5/6)*2/5-2 3/4:(2 1/2-1 2/5)+3/10

Ответ:

8/10

Пошаговое объяснение:

1) 2 2/3 + 4 5/6 = 2 4/6 + 4 5/6 = 6 9/6 = 7 3/6 = 7 1/2

2) 7 1/2 * 2/5 = 15/2 * 2/5 = 3/1 * 1/1 = 3/1 = 3

3) 2 1/2 - 1 2/5 = 2 5/10 - 1 4/10 = 1 1/10

4) 2 3/4 : 1 1/10 = 11/4 : 11/10 = 11/4 * 10/11 = 1/2 * 5/1 = 5/2 = 2 1/2

5) 3 - 2 1/2 = 1/2

6) 1/2 + 3/10 = 5/10 + 3/10 = 8/10