The expression shown in the image is:

$-13 + 10 - (-27)$

Step-by-Step Simplification:

1. The expression is $-13 + 10 - (-27)$. The negative sign in front of $-27$ changes it to a positive, so:

   $-13 + 10 + 27$

2. Next, combine $-13$ and $10$:

   $-13 + 10 = -3$

3. Now, add $27$ to $-3$:

   $-3 + 27 = 24$

So, the simplified result is:

$\boxed{24}$

Would you like further details or have any other questions?

Relative Questions:

1. How would this problem change if the signs were different?
2. What is the general rule for subtracting negative numbers?
3. How do we handle multiple additions and subtractions in an expression?
4. What are common mistakes people make when dealing with negative numbers?
5. Can you show another example involving more negative numbers?

Tip: When subtracting a negative number, always remember it turns into addition!