What are these fractions in simplest form?
( when I do a / it means a "fraction bar" or " over" like 16/30 or 16 over 30, just incase any of you get confused) but if you could help me simplify these that would be great!!

16y3/20y4 (that's a y to the third power for sixteen and a y to the fourth power for twenty)

6xy/16y

Abc/10abc

Mn2/pm5n (that's an n to the second power for nm and a m to the fifth power on pmn)

12h3k/16h2k2 ( that's a h to the third power for 12hk and a h to the second power and k to the second power for 16hk

8x/10y

24n2/28n ( that's a n to the second power)

30hxy/54kxy

5jh/15jh3 (that's a h to the third power for 15jh)

20s2t3/16st5 ( that's a a to the second power and t to the third power for 20st and t to the fifth power for 16st)