SOLUTION: transform the formulae 1/R=1/R1+R2 for R

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Question 919418: transform the formulae 1/R=1/R1+R2 for R
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
if you have this:
1%2FR=1%2FR1%2BR2.......... solve for R

1%2FR=1%2FR1%2B%28R1%2AR2%29%2FR1

1%2FR=%281%2BR1%2AR2%29%2FR1..cross multiply

1%28R1%29=R%281%2BR1R2%29

R=R1%2F%281%2BR1R2%29

but, if you have this:

1%2FR=1%2F%28R1%2BR2%29

1%2A%28R1%2BR2%29=1%2AR

R1%2BR2=R