SOLUTION: SOLVE FOR f: 1/p+ 1/q= 1/f I KNOW THE ANSWER IS f=pq/p+q BUT HOW DO I GET f BY ITSELF? PLEASE HELP!!! TAHNKS lj23kfuller@yahoo.com

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Question 138048: SOLVE FOR f: 1/p+ 1/q= 1/f
I KNOW THE ANSWER IS f=pq/p+q
BUT HOW DO I GET f BY ITSELF? PLEASE HELP!!!
TAHNKS lj23kfuller@yahoo.com

Answer by ankor@dixie-net.com(22740)   (Show Source): You can put this solution on YOUR website!
SOLVE FOR f: 1/p+ 1/q = 1/f
:
Put the two fractions on the left over a single denominator
=
:
Cross multiply and you have:
f(q+p) = pq
:
Divide both sides (q+p)
f =

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