To evaluate the expression:

$-87 - 5 - 13$

We start by performing the subtraction from left to right:

1. First, compute $-87 - 5$: $-87 - 5 = -92$

2. Next, subtract 13 from the result: $-92 - 13 = -105$

So, the value of the expression is:

$\boxed{-105}$

Would you like more details, or do you have any questions?

Related Questions:

1. How do you perform addition and subtraction with negative numbers?
2. What are the rules for combining multiple negative numbers in a calculation?
3. How can I simplify an expression involving both positive and negative terms?
4. What is the difference between subtraction and adding a negative number?
5. How can expressions with multiple operations be solved step by step?

Tip:

When dealing with multiple subtractions, think of each step as moving further left on the number line.