(2 2/15 + 2 7/10) : 1 2/27 - (2 7/10 - 2 2/15) : 2 3/7 По действиям

Решите задачу:

$(2 \frac{2}{15} +2 \frac{7}{10} ):1 \frac{2}{27} -(2 \frac{7}{10} -2 \frac{2}{15} ):2 \frac{3}{7} =( \frac{32}{15} + \frac{27}{10} ): \frac{29}{27}-( \frac{27}{10} - \frac{32}{15} ): \frac{17}{7}=$ $\frac{32*2+27*3}{30} * \frac{27}{29} - \frac{27*3-32*2}{30} * \frac{7}{17} = \frac{145}{10} * \frac{9}{29} - \frac{17}{30} * \frac{7}{17} = \frac{1305}{290} - \frac{7}{30}= \frac{9}{2} -$ $\frac{7}{30}= \frac{9*15-7}{30} = \frac{128}{30} = \frac{64}{15} =4 \frac{4}{15}$