Q: What is the negative version of the number 21,720,157?
A: -21,720,157
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:
| 21,720,155 | 21,720,156 | 21,720,158 | 21,720,159 |
| -21,720,155 | -21,720,156 | -21,720,158 | -21,720,159 |