Question

S=L (1 - r), for r

This is all it says, you are solving for r, the instructions just say solve for r

Answer 1

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

Explanation:

S = L ( 1 - r )

Solve the brackets.

S = L - L r

Subtract L from both sides.

S - L = - L r

Divide both sides by - L.

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

Answer 2

OK. Then let's solve for ' r '. That means you have to come up with an equation that says r = everything else.

Step #1:
Write the equation you're given: S = L (1 - r)

Let's divide each side by ' L ': S/L = 1 - r

Subtract 1 from each side : S/L - 1 = -r

Multiply each side by -1 : 1 - S/L = r

and there you have it.