a)5/2 ^9 = 45/18
1/6^3 = 3/18
7/18
7/24
30/24
9/24
25/30
1/30
8/30
28/36
6/36
5/36
2.
8/24
35/24
6/24
18/30
3/30
8/36
10/36
63/36
35/40
32/40
12/40