From midnight to 6:00 a.m., the temperature rose 8°C. At 6:00 a.m., the temperature was –20°C. What was the temperature at midnight? I need some help please, I don't understand this.
The temp. started at -20. If it rose +8 degrees, then it would be -20+8=-12, because since the -20 and +8 are opposites, you would subtract them and the answer would have the sign of the larger number which is -. so -12 is the answer.
