Question

Rewrite the formula below in terms of F rmula1" title="R= \frac{F}{N+F} " alt="R= \frac{F}{N+F} " align="absmiddle" class="latex-formula">

Answer 1

$\bf R=\cfrac{F}{N+F}\implies R(N+F)=F\implies RN+RF=F \\\\\\ RN=F-RF\implies RN=F(1-R)\implies \cfrac{RN}{1-R}=F$