Subtract L from both sides. the expression now becomes, <span>S−L=−rL</span> 2)Divide by L on both sides. <span><span><span>S−L</span>L</span>=−r</span> 3)Multiply with a negative sign on both sides in the final step to obtain the expression in terms of r so the answer is<span> #(L-S)/L = r#</span>
