Tính giá trị của biểu thức \(15\frac{1}{7} \cdot \left( {\frac{3}{{11}} + \frac{{ - 5}}{9}} \right) + 15\frac{1}{7}\left( { - \frac{4}{9} + \frac{8}{{11}}} \right)\).

\(15\frac{1}{7} \cdot \left( {\frac{3}{{11}} + \frac{{ - 5}}{9}} \right) + 15\frac{1}{7}\left( { - \frac{4}{9} + \frac{8}{{11}}} \right) = 15\frac{1}{7} \cdot \left( {\frac{3}{{11}} + \frac{{ - 5}}{9} - \frac{4}{9} + \frac{8}{{11}}} \right)\)

                                                    \( = 15\frac{1}{7} \cdot 0\)

                                                    \( = 0\).