The document provides step-by-step instructions for subtracting integers using a number line. It explains that to solve 5 - 3, you start at 5 on the number line, turn around since it's a subtraction problem, and count back 3 steps to reach the answer of 2. Similarly, it works through solving 6 - 10 step-by-step, starting at 6 and counting back 10 steps to reach the answer of -4. The key steps are to start at the first number, turn if it's a subtraction problem, and count back the number of steps in the second number.