Question

1/r =1/r^1+1/r^2 make
r^2 the subject ​

Answer 1

Answer:

I am not sure if this is what you are asking but I would just do this:

1/R = 1/R1 + 1/R2 => (1/R)-1 = (1/R1 + 1/R2)-1 => R = (1/R1 + 1/R2)-1

Hopefully I am doing what you are asking, but my apologies if not.

Step-by-step explanation:

I hope it may help you