15/19
15/19 is already in its simplest form, because '19' is a prime number, and there are NO factors of '19' except '1' & '19'.
30 over 38 in simplest form is 15 over 19.
15 over 19
30/38 = 15/19
Since 19 is prime and has no other factor that is not one out itself, there is no simpler form.
19 over 1000 is the simplest form
4/19 is in its simplest form.
160/19 is in its simplest form.
19/37 is the simplest form
19/25 is in its simplest form.
13/19 is in its simplest form.
19/240 is in its simplest form.