It depends on what types of fractions. But, just get the fraction down to the simplest form, or until you can't divide into it anymore. Ex. 28/7 in simplest form is 4/1
13/28 is in its simplest form.
9/28 is in its simplest form.
33/28 is in its simplest form.
11/28 is the simplest form.
28/55 is in its simplest form.
It depends on what types of fractions. But, just get the fraction down to the simplest form, or until you can't divide into it anymore. Ex. 28/7 in simplest form is 4/1
28/9 is in its simplest form.
28/185 is in its simplest form.
69/28 is in its simplest form.
13/28 is in its simplest form.
9/28 is in its simplest form.
33/28 is in its simplest form.
11/28 is the simplest form.
9/28 is in its simplest form.
43/28 is in its simplest form.
28 over 90 in its simplest form is 14 over 45.