To solve this, we first need to simplify the expressions inside the parentheses separately:

(3,5 + 2 1/3)
3,5 + 2 1/3 = 3,5 + 2 + 1/3 = 5,5 + 1/3 = 5,6

(3,5 - 2 1/3)
3,5 - 2 1/3 = 3,5 - 2 - 1/3 = 1,5 - 1/3 = 1,4

So, the final answer is:

5,6 : 1,4

This can also be expressed as a ratio: 5,6 to 1,4.