Corresponding range of celsius temperature c

As the formula says F = (9/5)C + 32 which is the equal to the following:

F - 32 = (9/5)C   =>   C = (F-32)*5/9

F1 = 45
F2 = 85

in Celsius they will be:
C1 = (45 - 32)*5/9 = 13*5/9 = 
C2 = (85 - 32)*5/9 = 53*5/9 =

And the answer will be:

< C <