30-(24-9),=

To solve this expression, we need to follow the order of operations, which is parentheses, exponents, multiplication and division (from left to right), and addition and subtraction (from left to right).

Starting with the innermost parentheses:

24-9 = 15

Now the expression becomes:

30 - 15

Finally, subtracting:

30 - 15 = 15

So, 30-(24-9) = 15.