\[\boxed{\mathbf{2.}\mathbf{384}}\]
Пояснение.
Решение.
\[\textbf{а)}\ \left( 4\frac{5}{9} + \frac{4}{9} \right) \cdot 9 = 4\frac{9}{9} \cdot 9 =\]
\[= 5 \cdot 9 = 45\]
\[\textbf{б)}\ \left( 2\frac{3}{4} + 7\frac{1}{3} \right) \cdot 6 =\]
\[= \left( 2\frac{9}{12} + 7\frac{4}{12} \right) \cdot 6 = 9\frac{13}{12} \cdot 6 =\]
\[= 10\frac{1}{12} \cdot 6 =\]
\[= \left( 10 + \frac{1}{12} \right) \cdot 6 =\]
\[= 10 \cdot 6 + \frac{1}{12} \cdot 6 = 60 + \frac{1}{2} =\]
\[= 60\frac{1}{2}\]
\[\textbf{в)}\ \left( 10 - 2\frac{1}{11} \right) \cdot 11 =\]
\[= \left( 9\frac{11}{11} - 2\frac{1}{11} \right) \cdot 11 =\]
\[= 7\frac{10}{11} \cdot 11 = \left( 7 + \frac{10}{11} \right) \cdot 11 =\]
\[= 7 \cdot 11 + \frac{10}{11} \cdot 11 = 77 + 10 =\]
\[= 87\]
\[\textbf{г)}\ \left( 8 - 1\frac{2}{5} \cdot 3 \right) \cdot 25 =\]
\[= \left( 8 - \left( 3 + \frac{6}{5} \right) \right) \cdot 25 =\]
\[= \left( 7\frac{5}{5} - 4\frac{1}{5} \right) \cdot 25 =\]
\[= 3\frac{4}{5} \cdot 25 = \left( 3 + \frac{4}{5} \right) \cdot 25 =\]
\[= 3 \cdot 25 + \frac{4}{5} \cdot 25 = 75 + 20 =\]
\[= 95\]