[tex] \it \frac{x}{3} + \frac{13}{18} = \frac{19}{18} = = > \\ \\ \it \frac{x}{3} = \frac{19}{18} - \frac{13}{18} = = > \\ \\ \it \frac{x}{3} = \frac{6}{18} = = > \\ \\ \it x = \frac{3 \cdot 6}{18} = = > \\ \\ \it x = \frac{18}{18} = = > \\ \\ \it \boxed{x = 1}[/tex]
