Question

100баллов -_+_-₽(₽!";₽)#9"+!";₽+2)*!₽+_

Answer 1

Ответ:

Объяснение:

1) 2/5 * 4/7 = (2*4)/(5*7) = 8/35

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

3) 4/9 * 5/12 = 1/9 * 5/3 = 5/27

4) 7/10 * 1/14 = 1/10 * 1/2 = 1/20

5) 13/15 * 1/26 = 1/15 * 1/2 = 1/30

6) 1/8 * 8/9 = 1/1 * 1/9 = 1/9

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

8) 3/8 * 10/21 = 1/4 * 5/7 = 5/28

9) 5 * 1/3 = 5/3 = 1 2/3

10) 4/13 * 3 = 12/13

11) 5/21 * 3 = 15/21 = 5/7

12) 12 * 5/72 = 1 * 5/6 = 5/6