3.3 - (7.5 - 10/3) * 3/5

First, simplify the expression inside the parentheses:

7.5 - 10/3 = 22/3 - 10/3 = 12/3 = 4

Now substitute this back into the original expression:

3.3 - 4 * 3/5

Now multiply 4 by 3/5:

4 * 3/5 = 12/5

Now substitute this back into the expression:

3.3 - 12/5

Now find a common denominator to subtract:

(3.3*5 - 12)/5
(16.5 - 12)/5
4.5/5
0.9

Therefore, 3.3 - (7.5 - 10/3) * 3/5 = 0.9.