Answer:
[tex] \frac{2}{3} + \frac{1}{3} = 2x \\ \frac{3}{3} = 2x \\ \frac{ \frac{3}{3} }{2} = \frac{2x}{2} \\ x = \frac{3}{3} \div \frac{2}{1} \\ x = \frac{3}{3} \times \frac{1}{2} \\ \\ x = \frac{3}{6} [/tex]
hope this helps you