Đáp án:
\(A = \frac{9}{4}\)
Giải thích các bước giải:
\(\begin{array}{l}
A = \frac{{\left( {\frac{{102}}{{25}} - \frac{2}{{25}}} \right).\frac{{17}}{4}}}{{\left( {\frac{{59}}{9} - \frac{{13}}{4}} \right).\frac{{16}}{7}}} = \frac{{\frac{{100}}{{25}}.\frac{{17}}{4}}}{{\left( {\frac{{59.4 - 13.9}}{{4.9}}} \right).\frac{{16}}{7}}}\\
= \frac{{4.\frac{{17}}{4}}}{{\frac{{119}}{{36}}.\frac{{16}}{7}}} = 17:\frac{{68}}{9} = \frac{{17.9}}{{68}} = \frac{{153}}{{68}} = \frac{9}{4}
\end{array}\)
