Question

решите по дейстивиям три примера
даю 30 баллов

Answer 1

Ответ:

Пошаговое объяснение:

Г.

1) 1. 5/11 : 1. 1/11 = 16/11 : 12/11 = 16/11 * 11/12 = 16/12 = 4/3 = 1. 1/3

2) 1. 1/9 * 1. 1/5 = 10/9 * 6/5 = 60/45 = 4/3 = 1. 1/3

3) 1. 1/3 - 1. 1/3 - 7. 5/7 = -7. 5/7

Д.

1) 3. 3/7 * 2. 5/8 = 24/7 * 21/8 = 3/1 * 3/1 = 9/1 = 9

2) 9 - 16 = -7

3) -7 : 5. 1/4 = -7 : 21/4 = -7 * 4/21 = -1*4 / 3 = -4/3 = -1. 1/3

4) -1. 1/3 + 11. 11/15 =

-1. 5/15 + 11. 11/15 =

10. 6/15 = 10. 2/5

Е.

1) 9/20 - 1/4 - 1/5 = 9/20 - 5/20 - 4/20 = 0

2) 17/139 : 0 = 0

3) 4. 56/157 + 0 =

4. 56/157