When adding two negative numbers, you add the absolute values of the numbers and keep the negative sign.
For example, if you add -3 and -5, you calculate it as follows:
- Find the absolute values: |−3| = 3 and |−5| = 5.
- Add the absolute values: 3 + 5 = 8.
- Keep the negative sign: -8.
So, -3 + -5 = -8.