When steve woke up. His temperature was 102°F. Two hours later it was 3° lower. What was his temperature then?

Question

I need to solve with an operation and Sentance

Answer 1

Sentence:

 

The final temperature is the sum of the initial temperature and the change in temperature.  The initial temperature is 102°F.  The change in temperature is -3°F.

 

Operation:

 

T_f = T_i + ΔT = 102°F + (-3°F) = (102 - 3)°F = 99°F