The problem you provided is:

5 + (−7)

Let's break it down:

1. You have the number 5.
2. Then you're adding a negative number, $-7$.

When adding a negative number, it is equivalent to subtracting the number:

$5 + (-7) = 5 - 7 = -2$

So, the answer is $-2$.

Would you like further details on how to visualize this on a number line?

Here are 5 related questions to expand on this:

1. What is $-3 + 5$?
2. How do you subtract negative numbers?
3. What is the result of $6 + (-9)$?
4. How do you add positive and negative numbers using a number line?
5. Can you explain how $-4 - 7$ differs from $-4 + (-7)$?

Tip: When adding a negative number, it is the same as subtracting the positive value of that number.