The temperature of a hill mountainous area is -3°C. fte a few hours, it will drop down by 4°C?

The temperature of a hill mountainous area is -3°C. fte a few hours, it will drop down by 4°C?

Explanation

Current temperature is -3°C, and it drops by 4°C.

So, -3 - 4 = -7°C — the new temperature.