Question

. Выполните действия:
номер 620 под буквой «а» 50 баллов

Answer 1

Ответ:

3. 5/6

Пошаговое объяснение:

1) 8. 2/3 : 1. 4/9 = 26/3 : 13/9 = 26/3 * 9/13 = 2/1 * 3/1 = 6/1 = 6

2) 6 - 3. 3/8 = 5. 8/8 - 3. 3/8 = 2. 5/8

3) 2. 5/8 + 1. 5/8 = 3. 10/8 = 4. 2/8 = 4. 1/4

4) 1. 1/3 * 4. 1/4 = 4/3 * 17/4 = 1/3 * 17/1 = 17/3 = 5. 2/3

5) 5. 2/3 - 1. 5/6 = 5. 4/6 - 1. 5/6 = 4. 10/6 -

1. 5/6 = 3. 5/6

Answer 2

Ответ:

3 5/6

Пошаговое объяснение:

1) 8 2/3 : 1 4/9 = 26/3 × 9/13 = 6

2) 6 - 3 3/8 = (48 - 27)/8 = 21/8

3) 21/8 + 1 5/8 = (21 + 13)/8 = 34/8

4) 1 1/3 × 34/8 = 4/3 × 34/8 = 34/6

5) 34/6 - 1 5/6 = (34 - 11)/6 = 23/6 = 3 5/6