5.28 д) 10 - (9 - 2/6)

10 - (9 - \frac{2}{6}) = 10 - (9 - \frac{1}{3}) = 10 - (\frac{27}{3} - \frac{1}{3}) = 10 - \frac{26}{3} = \frac{30}{3} - \frac{26}{3} = \frac{4}{3} = 1 \frac{1}{3} Ответ: **1 \frac{1}{3}**