Question

дам 30 балов кто решит​

Answer 1

Задание 4:

1) 5/6 + 2/7 = 35/42 + 12/42 = 47/42 = 1 5/42

2) 11/25 - 3/10 = 22/50 - 15/50 = 7/50

3) 15/16 - 3/4 = 15/16 - 12/16 = 3/16

4) 3/20 + 7/15 = 9/60 + 28/60 = 37/60

5) 13/16 - 7/12 = 39/48 - 28/48 = 9/48 = 3/16

6) 9/14 + 5/21 = 27/42 + 10/42 = 37/42

Задание 5:

а) 3/4 * 5/7 = 15/28

б) 4/11 * 3/4 = 12/44 = 3/11

в) 5/7 * 14/19 = 5/1 * 2/19 = 10/19

д) 4/5 : 3/7 = 4/5 * 7/3 = 28/15 = 1 13/15

е) 15/8 : 5/4 = 15/8 * 4/5 = 3/2 = 1 1/2

ж) 4/9 : 2/1 = 4/9 * 1/2 = 2/9