solve the proportion x/2=5/15
\(\frac{x}{2}= \frac{5}{15}\)\(x= \frac{5}{15}(2)\)\(x= \frac{2}{3}\)
\(\frac{x}{2}= \frac{5}{15} \\ \\ \frac{(2)x}{2}= \frac{(2)5}{15} \\ \\ x= \frac{10}{15}= \frac{(5)2}{(5)3} \\ \\ \boxed { x= \frac{2}{3} }\)
