SOLUTION: S=a/(a-r). solve for r. and why?

Algebra.Com
Question 500491: S=a/(a-r). solve for r. and why?

Answer by chessace(471)   (Show Source): You can put this solution on YOUR website!
Because you might be given S and a and need to find r.
:) or maybe you mean "how?".
Sa-Sr=a
Sr=Sa-a
r = a(S-1)/S

RELATED QUESTIONS

S= a/1-r solve for... (answered by stanbon)
s=pie(r+R) solve for... (answered by ankor@dixie-net.com)
Solve for r. R(s + r) =... (answered by swincher4391)
Solve for A:... (answered by tommyt3rd)
solve for r: S=... (answered by ad_alta)
Solve for r. S = (a^2)/(1 - sqrt{r^4}) (answered by math_tutor2020)
Solve for A... (answered by josgarithmetic)
Solve for R.... (answered by Fombitz)
Suppose we are given two functions, say r(x) and s(x). a) Is it true that r(x) + s(x) =... (answered by Theo)