1. The problem statement, all variables and given/known data a) One day, the temperature outside changed by 13.7 degrees on a Fahrenheit thermometer. By how much did the temperature change on a Celsius thermometer? 2. Relevant equations F = (9/5)C + 32 3. The attempt at a solution F2 - F1 = 13.7 (9/5)C2 + 32 -(9/5)C1 + 32 = 13.7 (9/5)C2 - (9/5)C1 = -50.3 (9/5)(C2 - C1) = -50.3 (C2 - C1) = -27.94444444 I thought change in anything was the difference between the final and initial values. Here I needed Celsius change so I used the difference in Conversion formula to relate Fahrenheit to Celsius. Any help with figuring out what I did wrong is appreciated!