Ответ:

Пошаговое объяснение:

1) 2 1/5-1 5/6=2 6/30-1 25/30=

11/30

4 29/60-11/30=4 29/60-22/60=

4 7/60

7 1/12-4 7/60=7 5/60-4 7/60=

2 58/60

5 7/15-2 58/60=5 28/60-2 58/60=2 1/2

2)14 7/24-10 31/48=14 14/48-10 31/48=3 31/48

2 3/4-1 7/12=2 9/12-1 7/12=1 2/12

3 31/48-1 2/12=3 31/48-1 8/48=

2 23/48

6 13/24-2 23/48=6 26/48-2 23/48=4 3/48=4 1/16

4 1/16-1 1/16=3