Verified answer

Пошаговое объяснение:

№3

3/7 = (3*3)/(7*3) = 9/21

24/64 = (24:8)/(64:8) = 3/8

10/15 = (10*5)/(15*5) = 50/75

7/12 = (7*2)/(12*2) = 14/24

48/56 = (48:4)/(56:4) = 12/14

№3

а) 10/3 = 3 1/3

б) 13/6 = 2 1/6

в) 71/7 = 10 1/7

г) 70/15 = 4 10/15

д) 308/30 = 10 8/30