Question

I need to isolate r3

R= _______1_________
1/r1+ 1/r2 +1/r3

Please help and respond as fast as you can. This is due tomorrow.

Answer 1

start by flipping both sides

Answer 2

\[\frac{ 1 }{ R }=\frac{ 1 }{ r _{1} }+\frac{ 1 }{ r _{2} }+\frac{ 1 }{ r _{3} }\]
\[\frac{ 1 }{ r _{3} }=\frac{ 1 }{R }-\frac{ 1 }{ r _{1} }-\frac{ 1 }{r _{2} }\]

Answer 3

Phi, By flipping did you mean to multiply both sides by reciprocal?

Answer 4

Thank you! It seems much simpler to me now

Answer 5

yw