Thực hiện phép tính: - \left( +

* Hướng dẫn giải

\(3,2.\frac{{15}}{{64}} - \left( {\frac{4}{5} + \frac{2}{3}} \right):\frac{{11}}{3}\)

\(\begin{array}{l}\,\,\,\,3,2.\frac{{15}}{{64}} - \left( {\frac{4}{5} + \frac{2}{3}} \right):\frac{{11}}{3}\\ = \frac{{16}}{5}.\frac{{15}}{{64}} - \left( {\frac{{12}}{{15}} + \frac{{10}}{{15}}} \right):\frac{{11}}{3}\\ = \frac{{16}}{5}.\frac{{15}}{{64}} - \frac{{22}}{{15}}:\frac{{11}}{3}\\ = \frac{{16}}{5}.\frac{{15}}{{64}} - \frac{{22}}{{15}} \cdot \frac{3}{{11}}\\ = \frac{3}{4} - \frac{2}{5}\\ = \frac{{15}}{{20}} - \frac{8}{{20}}\\ = \frac{7}{{20}}\end{array}\)