mohon dibantu ya kak, secepatnya

[tex] \frac{3a + 1}{3} + \frac{a}{2} \\ = \frac{(3a + 1)}{3} \times \frac{2}{2} + \frac{a}{2} \times \frac{3}{3} \\ = \frac{(3a + 1)(2)}{6} + \frac{3a}{6} \\ = \frac{6a + 2 + 3a}{6} \\ = \frac{9a + 2}{6} [/tex]
Semoga dapat membantu