It is: 8/28 = 2/7 in lowest form
19/28 is in the lowest form
15/28 is in its simplest form.
28 / 197 .... it does not reduce
28% = 28/100 = 7/25 in its lowest terms
28 over 21 = 4/3
28/63=4/9
47/28 is already in its lowest terms
28/32 = 7/8 in its lowest terms
60
9/28 is 9 over 28's lowest term .
28 over 252 (28/252) in lowest terms is 1/9
The lowest terms for 28 over 180 = 7/45