Answer:

The expression 15–5 may seem confusing at first, but it’s actually a simple mathematical calculation. Let’s break it down:

When you have two minus signs together, it is equivalent to a plus sign. So, 15–5 can be rewritten as 15 + 5.

Therefore, 15–5 is equal to 20.

To help you understand it better, here are a few examples of similar calculations:

- 10–2 = 10 + 2 = 12
- 25–10 = 25 + 10 = 35
- 100–50 = 100 + 50 = 150

In each case, the double minus sign is replaced with a plus sign, and the calculation proceeds accordingly.

So, the key thing to remember is that when you encounter an expression like 15–5, you can simplify it by changing the double minus sign to a plus sign. This way, you can solve the calculation accurately.

I hope this explanation helps! If you have any further questions, feel free to ask.