Question

Solve for r literal equation \frac{a}{a-r}" alt="S = \frac{a}{a-r}" align="absmiddle" class="latex-formula">

Answer 1

Step-by-step explanation:

$s = \frac{a}{a - r}$

multiply both sides by a - r

$(a - r)s = a$

divide both sides by s

$a - r = \frac{a}{s}$

subtract a from both sides

$- r = \frac{a}{s} - a$

invert the signs

$r = - \frac{a}{s} + a$