г) 15/22 : 15/33 = 15/22 × 33/15 = 33/22
= 1 11/22 = 1 1/2 ;
д) 1/2 : 3/10 = 1/2 × 10/3 = 5/3 = 1 2/3 ;
е) 8/9 : 9/10 = 8/9 × 10/9 = 80/81 ;
ж) 1/17 : 3/85 = 1/17 × 85/3 = 5/3 = 1 2/3 ;
з) 2/3 : 5/12 = 2/3 × 12/5 = 8/5 = 1 3/5 ;
и) 5/6 : 19/24 = 5/6 × 24/19 = 20/19 = 1 1/19 ;