Answer :
An example would be
8/12 - 4/12 = 4/12
8/12 + 4/12 = 12/12 = 1
Another example would be
13/24 - 9/24 = 4/24 = 1/6
13/24 + 9/24 = 22/24 = 11/12
Lastly, another example is:
4/6 - 3/6 = 1/6
4/6 + 3/6 = 7/6 = 1 1/6
8/12 - 4/12 = 4/12
8/12 + 4/12 = 12/12 = 1
Another example would be
13/24 - 9/24 = 4/24 = 1/6
13/24 + 9/24 = 22/24 = 11/12
Lastly, another example is:
4/6 - 3/6 = 1/6
4/6 + 3/6 = 7/6 = 1 1/6