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

The value of the formula is
`r=(L-S)/(L)`.

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.

`(S-L)/(-L)=(-rL)/(-L)`

`r=(-S+L)/(L)`

`r=(L-S)/(L)`

Hence, the value of the formula is
`r=(L-S)/(L)`.