Solving for Indicated Variable [1 Problem]

• August 22nd 2012, 12:33 PM
zezima
Solving for Indicated Variable [Desperate]
I don't know how to solve this problem:

Solve for r:

S = L - rL

Thank you and please show your work/explain steps. :)
• August 22nd 2012, 02:17 PM
pickslides
Re: Solving for Indicated Variable [1 Problem]
$S = L - rL$

take L from both sides

$S -L= - rL$

divide -L from both sides

$\frac{S -L}{-L}= r$

and you are done.

You may want to neaten the LHS

$\frac{L-S}{L}= r$

$1-\frac{S}{L}= r$