[tex] \frac{2}{3}(6 - \frac{5}{6} ) \\ = \frac{2}{3} \times 6 - \frac{2}{3} \times \frac{5}{6} \\ = 2 \times 2 - \frac{5}{3 \times 3} \\ = 4 - \frac{5}{9} \\ = \frac{4 \times 9 - 5}{9} \\ = \frac{36 - 5}{9} \\ = \frac{31}{9} [/tex]
