Answer:
[tex]12 \frac{4}{6} [/tex]
Step-by-step explanation:
[tex]5 \frac{3}{9} + \frac{4}{6} + 6 \frac{2}{3} = \frac{48}{9} + \frac{4}{6} + \frac{20}{3} = \frac{96}{18} + \frac{12}{18} + \frac{120}{18} = \frac{228}{18} = 12 \frac{12}{18} = 12 \frac{4}{6} [/tex]