The expression $7 - (-2)$ simplifies as follows:

Subtracting a negative number is the same as adding the positive version of that number. So:

$7 - (-2) = 7 + 2 = 9$

Therefore, $7 - (-2) = 9$.

Would you like any more details or have any questions?

Here are 5 related questions you might find interesting:

1. What is $5 - (-3)$?
2. How do you simplify $-4 - (-7)$?
3. Can you explain why subtracting a negative number is equivalent to adding a positive number?
4. What is the result of $10 - (-5) + (-3)$?
5. How do you solve $x - (-y) = z$ for $x$?

Tip: When you subtract a negative number, always think of it as adding the absolute value of that number.