The real-world problem that could be solved with the sum −22 + 9 is:
The temperature was −22°F yesterday. Today the temperature is 9°F. How much warmer is it today compared with yesterday?
This scenario involves finding the difference in temperature from one day to the next, which can be expressed mathematically as −22 + 9, giving a result of −13. This indicates that today's temperature is 13°F warmer than yesterday's.