1. 14 can be divided by 7 ( 14/7 = 2) so 7/14 reduces to 1/2
2. Both 6 and 9 can be divided by 3: 6/9 reduces to 2/3
3. 3/8 cannot be reduced, they do not have a common multiple, so this stays 3/8
4. Both 16 and 20 can be divided by 4, so this reduces to 4/5
