# How do you solve for #r# in the formula #S = L - rL#?

##### 1 Answer

Feb 21, 2016

Given expression:

1)Subtract L from both sides.

the expression now becomes,

2)Divide by L on both sides.

3)Multiply with a negative sign on both sides in the final step to obtain the expression in terms of r

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