Ответ на фотографии...

Пошаговое объяснение:

1) 4/25 : 0,4 = 4/25 : 4/10 = 4/25 * 10/4 = 1/5 * 2/1 = 2/5

2) 15/16 : 0,25 = 15/16 : 25/100 = 15/16 * 100/25 = 3/4 * 25/5 = 75/20 = 15/4 = 3 3/4

3) 3/8 * 0,25 = 3/8 * 25/100 = 3/8 * 1/4 = 3/32

4) 1,4 : 3 1/2 = 14/10 : 7/2 = 14/10 * 2/7 = 2/5 * 1/1 = 2/5

5) 0,75 : 3/4 = 0,75 : 0,75 = 1

6) 43/15 : 0,15 = 43/45 : 15/100 = 43/45 * 100/15 = 43/45 * 20/3 = 43/9 * 4/3 = 172/27 = 6 10/27

7) 0,6 : 4/5 = 0,6 : 0,8 = 0,75

8) 2,7 : 5 1/7 = 27/10 : 36/7 = 27/10 * 7/36 = 3/10 * 7/4 = 21/40