Your inequality describes a negative fraction.

A fraction is negative if

- the numerator is negative (that means lower than zero)andthe denominator is positive (that means greater than zero)

or

-- the numerator is positive (that means greater than zero)andthe denominator is negative (that means lower than zero)

Transcribe these conditions into inequalities:

The final result is:

To check your calculations you can plug in some values for T to see if they give the right result.