1) 4 1/3•3/10

2) 7/9•1 2/7

3)4/11•4 7/12

4)1 1/9•3/10

5)27•1 4/9

6)4•2 5/24

7)1 5/6•18

8)12•3 3/8

Пошаговое объяснение:

1) 4 1/3 * 3/10 = 13/3 * 3/10 = 13/1 * 1/10 = 13/10 = 1 3/10

2) 7/9 * 1 2/7 = 7/9 * 9/7 = 1/1 * 1/1 = 1/1 = 1

3) 4/11 * 4 7/12 = 4/11 * 55/12 = 1/1 * 5/3 = 5/3 = 1 2/3

4) 1 1/9 * 3/10 = 10/9 * 3/10 = 1/3 * 1/1 = 1/3

5) 27 * 1 4/9 = 27 * 13/9 = 3 * 13/1 = 39/1 = 39

6) 4 * 2 5/24 = 4 * 43/24 = 1 * 43/6 = 43/6 = 7 1/6

7) 1 5/6 * 18 = 11/6 * 18 = 11/1 * 3 = 33/1 = 33

8) 12 * 3 3/8 = 12 * 27/8 = 3 * 27/2 = 51/2 = 25 1/2