Выполни действия: 1 5/16*(9-2 1/7).

\[1\frac{5}{16} \cdot^{2}\left( 9 -^{1}2\frac{1}{7} \right) = 9\]

\[1)\ 9 - 2\frac{1}{7} = 8\frac{7}{7} - 2\frac{1}{7} = 6\frac{6}{7}\]

\[2)\ 1\frac{5}{16} \cdot 6\frac{6}{7} = \frac{21}{16} \cdot \frac{48}{7} = \frac{3 \cdot 7 \cdot 16 \cdot 3}{16 \cdot 7} = 9.\]