Question

а)1/2+5/8,б) 3/4-1/2,в)7/10-3/5,г)5/7-3/14,д)5/9-5/12, е)7/12-7/20,ж)5/6+3/8,з)19/21-11/15,и)21/22-3/55,к)5/42+10/63,л)11/21-2/35,м)5/24+7/60​

Answer 1

Пошаговое объяснение:

1/2 + 5/8 = 4/8 + 5/8 = 9/8 = 1 1/8

3/4 - 1/2 = 3/4 - 2/4 = 1/4

7/10 - 3/5 = 7/10 - 6/10 = 1/10

5/7 - 3/14 = 10/14 - 3/14 = 7/14 = 1/2

5/9 - 5/12 = 20/36 - 15/36 = 5/26

7/12 - 7/20 = 35/60 - 21/60 = 14/60 = 7/30

5/6 + 3/8 = 20/24 + 9/24 = 29/24 = 1 5/24

19/21 - 11/15 = 95/105 - 77/105 = 18/105

21/22 - 3/55 = 105/110 - 6/110 = 99/110

5/42 + 10/63 = 15/126 + 20/126 = 35/126

11/21 - 2/35 = 55/105 - 6/105 = 49/105

5/24 + 7/60 = 25/120 + 14/120 = 39/120