Verified answer

Ответ:

а) 1 2/7 × 1 1/4 = 9/7 × 5/4 = 45/28 = 1 17/28

б) 4 2/3 × 2/5 = 14/3 × 2/5 = 28/15 = 1 13/15

в) 1 3/5 × 3 3/4 = 8/5 × 15/4 = 2/1 × 3/1 = 6/1 = 6

г) 4/9 × 2 3/4 = 4/9 × 11/4 = 1/9 × 11/1 = 11/9 = 1 2/9

д) 2 3/4 × 4/11 = 11/4 × 4/11 = 1/1 × 1/1 = 1/1 = 1

е) 1 3/4 × 1 5/7 = 7/4 × 12/7 = 1/4 × 3/1 = 3/4

ж) 3 1/4 × 4 = 13/4 × 4/1 = 13/1 × 1/1 = 13/1 = 13

з) 10 × 5 2/5 = 10/1 × 27/5 = 2/1 × 27/1 = 54/1 = 54

и) 3 5/6 × 1 7/23 = 23/6 × 30/23 = 1/1 × 5/1 = 5/1 = 5

к) 1 2/3 × 2 2/5 = 5/3 × 12/5 = 1/1 × 4/1 = 4/1 = 4

л) 7 3/11 × 2 19/40 = 80/11 × 99/40 = 2/1 × 9/1 = 18/1 = 18

м) 2 1/2 × 2 2/15 = 5/2 × 32/15 = 1/1 × 16/3 = 16/3 = 5 1/3

н) 0 × 1 4/9 = 0

о) 1 5/7 × 1 = 12/7 × 1/1 = 12/7 = 1 5/7

п) 3 8/9 × 0 = 0