[tex] \frac{x}{2} [/tex] = [tex] \frac{5}{15} [/tex] equals x = [tex] \frac{2}{3} [/tex].
First, simplify [tex] \frac{5}{15} [/tex] to [tex] \frac{1}{3} [/tex]. Your problem should look like: [tex] \frac{x}{2} [/tex] = [tex] \frac{1}{3} [/tex].
Second, multiply both sides by 2. Your problem should look like: x = [tex] \frac{2}{3} [/tex] , which is the answer.