Answer:

Here are the solutions to the given problems:

5 ÷ 3/35 = 35/3 ÷ 3/35 = 35/3 * 35/3 = 1225/9

7/9 ÷ 1/3 = 3/1 * 9/7 ÷ 3/1 = 27/7

3/8 ÷ 7 4/7 = 7 4/7 ÷ 3/8 = 7 4/7 * 8/3 = 29 4/21

15 2/9 ÷ 3 1/3 = 3 1/3 ÷ 15 2/9 = 3 1/3 * 9 2/15 = 27 5/9

I hope this helps! Let me know if you have any questions.