Question 199916
{{{L=P(1+rt)}}} Start with the given equation.



{{{L=P+Prt}}} Distribute



{{{L-P=Prt}}} Subtract P from both sides.



{{{(L-P)/(Pt)=r}}} Divide both sides by Pt to isolate "r".



So the solution is {{{r=(L-P)/(Pt)}}}