To simplify the expression, let's break it down step by step:

1. 3 + 2 căn 3 / căn 3
The square root of 3 divided by the square root of 3 is equal to 1, so this simplifies to:
3 + 2 * 1
= 3 + 2
= 5

2. 2 + căn 2 / căn 2
Similar to the previous step, the square root of 2 divided by the square root of 2 is equal to 1, so this simplifies to:
2 + 1
= 3

3. (2 + căn 3)
There is no further simplification possible for this expression.

Now, let's put it all together:

5 + 3 - (2 + căn 3)

Since there are no operations inside the parentheses, we can remove them:

5 + 3 - 2 - căn 3

Finally, we can combine like terms:

(5 - 2) + 3 - căn 3
= 3 + 3 - căn 3
= 6 - căn 3

Therefore, the simplified expression is 6 - căn 3.