Question

помогите по матиматике даю 15 балов ​

Answer 1

Ответ:

1) 2/5 + 3/5 = 2+3/5 = 5/5 = 1

2) 3/7 - 2/7 = 2-3/7 = -1/7

3) 7/20 - 3/20 = 7-3/20 = 4/20 = 1/5

4) 1/9 + 5/9 = 1+5/9 = 6/9 = 2/3

5) 6/23 - 2/23 = 6-2/23 = 4/23

6) 3/20 + 7/20 = 3+7/20 = 10/20 = 1/2

7) 13/29 - 2/29 = 13-2/29 = 11/29

8) 11/51 + 13/51 = 11+13/51 = 24/51 = 8/17

9) 17/72 - 13/72 = 17-13/72 = 4/72 = 1/18

10) 32/55 + 23/55 = 32+23/55 = 55/55 = 1

11) 5/33 + 6/34 = 5+6/33 = 11/33 = 1/3

12) 13/48 - 11/48 = 13-11/48 = 2/48 = 1/24