Question

solve the proportion x/2=5/15

Answer 1

$\frac{x}{2}= \frac{5}{15}$

$x= \frac{5}{15}(2)$

$x= \frac{2}{3}$

Answer 2

$\frac{x}{2}= \frac{5}{15} \\ \\ \frac{(2)x}{2}= \frac{(2)5}{15} \\ \\ x= \frac{10}{15}= \frac{(5)2}{(5)3} \\ \\ \boxed { x= \frac{2}{3} }$