Simply remove the zeros.
12 over 28 in simplest form is 3 over 7.
3/8 is the simplest form.
that's already the simplest form.
38/5 is in its simplest form.
33/100 is in its simplest form.
15/19 is already in its simplest form, because '19' is a prime number, and there are NO factors of '19' except '1' & '19'.
12 over 28 in simplest form is 3 over 7.
3/8 is the simplest form.
that's already the simplest form.
29/77 is in its simplest form.
3/100 is in its simplest form.
5/14 is in its simplest form.
19/3 is in its simplest form.
19/28 is in its simplest form.
19/28 is in its simplest form.
7/30 is in its simplest form.
83/100 is in its simplest form.