Answer:
The temperature at midnight is -28
Explanation:
The temperature at midnight is unknown, therefore we can use the variable x as a substitute.
We know that there is an increase in temperature (8C) and that the result in the end is -20C. This results in this equation:
x+8=-20
We then work backwards by subtracting 8 from both sides. Since it -20 it will become -28
x=-28
