Question

Solve for r in the formula S = L - rL.

Answer 1

subtract L from both sides
S - L = L - L -rL
S - L = -rL
divide both sides by L
S - L/L = -rL/L
-r = S - L/L
divide both sides by -1
r = -S + L/L

Answer 2

Answer:

The value of the formula is $r=\frac{L-S}{L}$.

Step-by-step explanation:

Consider the provided formula.

$S = L - rL$

We need to solve the provided formulafor r.

Subtract L from both side.  

$S-L=L-L- rL$

$S-L=-rL$

Divide both sides by -L.

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

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

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

Hence, the value of the formula is $r=\frac{L-S}{L}$.