Posted by AK on Tuesday, January 8, 2013 at 3:35pm.
Rearrange to make f the subject, showing your work step by step:
hf = hcT / b

rearrange this equation  Steve, Tuesday, January 8, 2013 at 3:48pm
solve for f,
divide both sides by h:
f = cT/b
not much rearranging to do there.