Tính bằng cách thuận tiện nhất: 6/25 + 7/48 + 9/25 + 17/48

\[\frac{6}{{25}} + \frac{7}{{48}} + \frac{9}{{25}} + \frac{{17}}{{48}}\]

\[ = \left( {\frac{6}{{25}} + \frac{9}{{25}}} \right) + \left( {\frac{{17}}{{48}} + \frac{7}{{48}}} \right)\]

\[ = \frac{{15}}{{25}} + \frac{{24}}{{48}}\]

\[ = \frac{3}{5} + \frac{1}{2}\]

\[ = \frac{6}{{10}} + \frac{5}{{10}}\]

\[ = \frac{{11}}{{10}}\]