SOLUTION: Miscellaneous circuit equation. Find R1 when R is 210. R = 84 --------- R1/2 + R1/3

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Question 247059: Miscellaneous circuit equation.
Find R1 when R is 210.
R = 84
---------
R1/2 + R1/3
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find R1 when R is 210.
R = 84
---------
R1/2 + R1/3

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Cross-multiply:
210(R1/2 + R1/3) = 84
105R1 + 70R1 = 84
175R1 = 84
R1 = 0.48
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Cheers,
Stan H.