1)3/8: 2/5 2) 4/7: 2/9 3) 16/17: 8 4)1 3/7: 3/7 ,оч

1) 3/8 : 2/5 = 3/8 × 5/2 = 15/10 = 1,5
2) 4/7 : 2/9 = 4/7 × 9/2 = 36/14 = 2 8/14 = 2 4/7.
3) 16/17 : 8 = 16/17 × 1/8 = 16/166 = 8/83
4) 1 3/7 : 3/7 = 10/7 : 3/7 = 10/7 × 7/3 = 10/3 = 3 1/3

3\8 : 2\5 = 3\8 * 5\2=15\16
4\7 : 2\9 = 4\7*9\2 = 36\14 =18\7 = 2 целых 4\7
16\17 : 8 = 16\17 * 1\8 = 8\17
3\7 : 3\7 = 3\7 * 7\3 = 1