please help me to perform the indicated operation.15-20/(3)(5)-15

You need additional parentheses or brackets to clarify the order of operations.
For example,
15-{20/[(3)(5)]}-15 = 20/15 = 4/3
(15-20}/[(3)(5])-15 = -15 1/3
15-[20/(3)](5)-15 = 100/3
(15-20)/[(3)(5)-15] = -infinity

im srry for u try some 1 like a NERD

To perform the indicated operation: 15 - 20 / (3)(5) - 15, we need to follow the order of operations, which is known as PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, and Addition and Subtraction from left to right).

1. First, let's simplify the expression inside the parentheses: (3)(5) = 15.
Now we have: 15 - 20 / 15 - 15.

2. Next, let's perform the division: 20 / 15 = 4/3.
The expression becomes: 15 - 4/3 - 15.

3. Finally, let's simplify the remaining subtraction: 15 - 15 = 0.
Now we have: 0 - 4/3.

At this point, we have an answer. However, if you want to present the result in its simplest form, you can convert the expression into a mixed fraction:

0 - 4/3 = -4/3.

So, the final answer is -4/3.