To subtract $-5 - 12$ using a number line, follow these steps:

1. Start at $-5$ on the number line.
2. Subtracting 12 means you move 12 units to the left since subtracting is moving in the negative direction.

So, start at $-5$ and move 12 steps to the left:

• Moving left from $-5$, you pass $-6$, $-7$, ..., all the way to $-17$.

Thus, $-5 - 12 = -17$.

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

Here are 5 related questions to expand your understanding:

1. How would you represent $-5 + 12$ on a number line?
2. What happens when you subtract a positive number from a positive number on a number line?
3. How do you add two negative numbers using a number line?
4. What is the result of $12 - (-5)$ on a number line?
5. How can you use the number line to visualize the difference between two negative numbers?

Tip: When subtracting a positive number from a negative number, always move to the left on the number line.