Q: What is the negative version of the number 13,515,721?
A: -13,515,721
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 13,515,719 | 13,515,720 | 13,515,722 | 13,515,723 |
| -13,515,719 | -13,515,720 | -13,515,722 | -13,515,723 |