Question

Решите пожалуйста задания на листочке

Answer 1

Ответ:

Пошаговое объяснение:

3,25 - 0,3 * 2,1 = 2,62

1) 0,3 * 2,1 = 0,63

2) 3,25 - 0,63 = 2,62

(7 - 1. 5/9 : 7/24) : 20/27 = 2. 1/4

1) 1. 5/9 : 7/24 = 14/9 : 7/24 = 14/9 * 24/7 = 2/3 * 8/1 = 16/3 = 5. 1/3

2) 7 - 5. 1/3 = 6. 3/3 - 5. 1/3 = 1. 2/3

3) 1. 2/3 : 20/27 = 5/3 : 20/27 = 5/3 * 27/20 = 1/1 * 9/4 = 2. 1/4

8/21 : 16/27 - 3/14 = 3/7

1) 8/21 : 16/27 = 8/21 * 27/16 = 1/7 * 9/2 = 9/14

2) 9/14 - 3/14 = 6/14 = 3/7

7/15 : (6/10 - 8/3) + 19 * 2/31 = 1

1) 6/10 - 8/3 = 18/30 - 80/30 = -62/30 = -31/15

2) 7/15 : (-31/15) = 7/15 * (-15/31) = -7/31

3) 19 * 2/31 = 38/31 = 1. 7/31

4) -7/31 + 1. 7/31 = 1

16/25 : 28/45 - 1 = 1/35

1) 16/25 : 28/45 = 16/25 * 45/28 = 4/5 * 9/7 = 36/35 = 1. 1/35

2) 1. 1/35 - 1 = 1/35