Let X be the temperature that represents the values by which november is warmer than january.
The temperature of January is, -13.4
The temperature of November is, - 1.7.
Therefore, the equation to find out how many degrees warmer is the average temperature in November than in January can be written as,
[tex]\begin{gathered} -1.7-(-13.4)=X \\ 13.4-1.7=X \end{gathered}[/tex]