To solve $-12 + 6$ on a number line:

1. Start at $-12$ on the number line.
2. Go right 6 places because you are adding a positive number.

The result will be $-6$.

Do you need further details or have any questions? Here are related questions to expand on this topic:

1. What happens if we add a negative number instead?
2. How do we represent subtraction on a number line?
3. Can you describe how to visualize the operation $-6 - 4$ on the number line?
4. How do positive and negative numbers interact during addition?
5. What is the difference between adding and subtracting integers?

Tip: Always remember: moving right on the number line represents addition, while moving left represents subtraction!