if you are asking "what is 3 and 1/2 as a mixed number", the answer is that it already is in mixed number format.
8/3 as a mixed number is 2 and 2/3
2 x 2/3 = 4/3. Written as a mixed number, 4/3 = 1 1/3 (one and one third as a mixed number).
It is: 5/3 = 1 and 2/3 as a mixed number
11/3 = 3 and 2/3 as a mixed number
The equivalent mixed number is 8 2/3
If you mean 14/3 then it is 4 and 2/3 as a mixed number
The mixed number of 3.50 is: 3 1/2
2 3/10
23/3 in a mixed number would be 7 2/3
2 and 2/3
3.003 as a mixed number