Question

13/20-6/15; 8/5-7/12; 17/20-4/15.

Answer 1

Пошаговое объяснение:

13/20- 6/15 = 39/60- 24/60= 15/60 = 1/4

8/5- 7/12 = 96/60- 35/60 = 61/60 = 1 1/60

17/20- 4/15= 51/60- 16/60 = 35/60= 7/12