Question

S= (rL-a)/(r-1) solve for r

Answer 1

S=(rL-a)/(r-1)

Multliply both sides by (r-1) to get

S(r-1) = rL-a

Distribute

Sr - S = rL - a

Subtract rL and Add S to get

Sr - rL = S - a

Factor out r

r(S - L) = S - a

Divide out

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

Answer 2

Thank you so much!

Answer 3

Your welcome! :)