15³-3³×5=?

To solve this equation, you would start by performing the exponentiation first.

15³ means 15 raised to the power of 3, which is equal to 15 x 15 x 15 = 3375.

3³ means 3 raised to the power of 3, which is equal to 3 x 3 x 3 = 27.

Now, multiply 27 by 5: 27 x 5 = 135.

Finally, subtract 135 from 3375: 3375 - 135 = 3240.

So, 15³ - 3³ x 5 is equal to 3240.