What is the sum of -5 and -9?

To find the sum of -5 and -9, you simply add the two negative numbers together. When adding two negative numbers, the result is also negative.

In this case, combine the absolute values of the two numbers: 5 + 9 equals 14. Because both numbers are negative, the sum is -14.

Thus, the correct answer is -14, as it accurately represents the result of the sum of -5 and -9, which is a greater negative value than either of the original numbers alone.