The expression represents the absolute value of -13, which is simply the distance of -13 from 0 on the number line. Since distance is always a non-negative value, the answer is 13. No need to fuss over negative signs here!

This concept of absolute value comes in handy in various mathematical and real-life scenarios, like calculating distances or solving equations where the direction (positive or negative) doesn’t matter. So, the next time you need to find out how far something is from a point, remember to use absolute values!