SOLUTION: Solve the formulas below for the indicated variable. Show your work. E/R+r =1, for R I really don't even understand what they mean here, I'd really appreciate some help! Thank

Algebra ->  Expressions-with-variables -> SOLUTION: Solve the formulas below for the indicated variable. Show your work. E/R+r =1, for R I really don't even understand what they mean here, I'd really appreciate some help! Thank       Log On


   



Question 353251: Solve the formulas below for the indicated variable. Show your work.
E/R+r =1, for R
I really don't even understand what they mean here, I'd really appreciate some help! Thank you!

Answer by unlockmath(1688) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
Basically all it's calling for is to get R by itself on one side of the =.
E/R+r =1, for R
First we multiply by R to get it out of the denominator.
E+rR =1R
Subtract E and R from both sides to get: (Note 1R is the same as R)
rR-R=-E
rewrite as:
R(r-1)=-E
Now Divide by r-1 to get:
R=-E/(r-1)
Make sense?
RJ
www.math-unlock.com