Question

(9- 3 4/5 ) • ( 1 5/6 + 1/9) - 2/3

Answer 1

$(9 - 3 \frac{4}{5} ) \times (1 \frac{5}{6} + \frac{1}{9} ) - \frac{2}{3} = 13 \times \frac{7}{9} - \frac{2}{3} = \frac{85}{9}$

Answer 2

$(9 - 3 \frac{4}{5} ) \times (1 \frac{5}{6} + \frac{1}{9} ) - \frac{2}{3} = \\ \\ = (8 \frac{5}{5} - 3 \frac{4}{5} ) \times (1 \frac{15}{18} + \frac{2}{18} ) - \frac{2}{3} = \\ \\ = 5 \frac{1}{5} \times 1 \frac{17}{18} - \frac{2}{3} = \frac{26 \times 35}{5 \times 18} - \frac{2}{3} = \\ \\ = \frac{91}{9} - \frac{2}{3} = \frac{91}{9} - \frac{6}{9} = \frac{85}{9} = 9 \frac{4}{9}$