5) 3 1/9 * 3/8 = 28/9 * 3/8 = 7/3 * 1/2 = 7/6

6) 9 1/7 * 3/4 = 64/7 * 3/4 = 16/7 * 3/1 = 48/7

7) 10 1/5 * 10/17 = 51/5 * 10/17 = 3/1 * 2/1 = 3 * 2 = 6

8) 3/11 * 5 1/2 = 3/11 * 11/2 = 3/1 * 1/2 = 3 * 1/2 = 3/2