Method to find higher temperature if temperature units are different

To compare temperature all the temperature should have same unit. For example:

Find the higher temperature out of two given temeparature 39^oC and 49^oF.

Now we should have same units. means lets convert 49^oF in celsius.

Using calculator 49^oF = 9.4452^oC

Now we can compare both temperature in ^oC and we can say

39^oC is higher than 49^oF.