Question

Вычислите
а) 2/3-1/5 а)1/6+1/8 а)3/4-2/7 а)9/10-1/15 б)3/4+1/10 б)5/8-1/3 б)1/2+3/7 б)2/15+3/20 г)2/7+1/3 г)11/12-3/8 г)8/9-1/2 г)14/15-7/25

Answer 1

Пошаговое объяснение:

2/3 - 1/5 = 10/15 - 3/15 = 7/15

1/6 + 1/8 = 4/24 + 3/24 = 7/24

3/4 - 2/7 = 21/28 - 8/28 = 13/28

9/10 - 1/15 = 27/30 - 2/30 = 25/30 = 5/6

3/4 + 1/10 = 15/20 + 2/20 = 17/20

5/8 - 1/3 = 15/24 - 8/24 = 7/24

1/2 + 3/7 = 7/14 + 6/14 = 13/14

2/15 + 3/20 = 8/60 + 9/60 = 17/60

2/7 + 1/3 = 6/21 + 7/21 = 13/21

11/12 - 3/8 = 22/24 - 9/24 = 13/24

8/9 - 1/2 = 16/18 - 9/18 = 7/18

14/15 - 7/25 = 70/75 - 21/75 = 49/75