6/3 or 2
Five thirds
It is: 4/3
plus indicates that it is a sum (not a difference): 1/4 + 2/4 = 3/4. You can just add the numerators, since the denominators are the same.
2/2 + 3/3 = 1 + 1 = 2
64 over 3 or 21 and 1 thrid
1/6
2over 3
8 and 1/3 percent
The sum of 1/8 and 3/8 is 1/2
That rounds to 1/2
0.6667
2 over 8