To solve 24 - (-15), we can use the property of subtracting a negative number, which says that subtracting a negative is the same as adding a positive.
So, we rewrite the problem:
24 - (-15) = 24 + 15
Now, we can add:
24 + 15 = 39
Answer: 39
This means when you subtract a negative number, you actually add its positive version!