Solution:
Let H represent the high temperature
Let L represent the low temperature
Given that,
The coldest temperature in the city today was 14.8 degrees (Fahrenheit) lower than the hottest temperature
L = H - 14.8
Rearrange,
H = L + 14.8
If the low temperature was 68.9 degrees, what was the high temperature?
L = 68.9
Then,
H = 68.9 + 14.8
H = 83.7
Thus the high temperature is 83.7 degrees