SOLUTION: Rt = r1r2/(r1+r2) Rt is the total resistance and r1 and r2 are individual resistors. solve the above equation for r2. Dont put numbers into the equation to solve.

Algebra ->  Exponential-and-logarithmic-functions -> SOLUTION: Rt = r1r2/(r1+r2) Rt is the total resistance and r1 and r2 are individual resistors. solve the above equation for r2. Dont put numbers into the equation to solve.       Log On


   

Question 372104: Rt = r1r2/(r1+r2)
Rt is the total resistance and r1 and r2 are individual resistors. solve the above equation for r2. Dont put numbers into the equation to solve.

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Solve for r2:
Rt = %28%28r1%2Ar2%29%29%2F%28%28r1%2Br2%29%29
:
Multiply both sides by (r1+r2)
Rt(r1+r2) = r1*r2
Rt*r1 + Rt*r2 = r1*r2
:
Subtract (Rt*r2)
Rt*r1 = r1*r2 - Rt*r2
:
factor out r2:
Rt*r1 = r2(r1-Rt)
:
Divide both sides by (r1-Rt)
%28%28Rt%2Ar1%29%29%2F%28%28r1-Rt%29%29 = r2