189 and 40 have no factor in common and so the fraction cannot be reduced.
28 over 20 reduced = 7/5
28/52 = 7/13
No 28/29 cannot be reduced.
189% reduces to: 1 89/100
9/28 is 9 over 28's lowest term .
28/38 = 14/19
It is: 28/35 = 4/5
Yes: 28/100 = 7/25
28/70= .4 or (2/5)
51/28 can't be reduced.
2 over 7