SOLUTION: Please solve for R Z=Rr/R+r

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Question 196446: Please solve for R
Z=Rr/R+r
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
If you started with:
Z=%28Rr%29%2F%28R%2Br%29
Multiply both sides by (R+r):
Z%28R%2Br%29=Rr
ZR%2BZr=Rr
Zr=Rr-ZR
Zr=R%28r-Z%29
%28Zr%29%2F%28r-Z%29=R