3. Tan 13.6 10148 Вычислите: + (3-1 ) - . Запишите полностью ревене и ответ

\[3 - 1\frac{17}{21} = 3 - \frac{38}{21} = \frac{63}{21} - \frac{38}{21} = \frac{25}{21}\] \[\frac{5}{6} + \frac{10}{9} \cdot \frac{25}{21} - \frac{11}{30} = \frac{5}{6} + \frac{250}{189} - \frac{11}{30}\] \[\frac{5}{6} = \frac{5 \times 315}{6 \times 315} = \frac{1575}{1890}\] \[\frac{250}{189} = \frac{250 \times 10}{189 \times 10} = \frac{2500}{1890}\] \[\frac{11}{30} = \frac{11 \times 63}{30 \times 63} = \frac{693}{1890}\] \[\frac{1575}{1890} + \frac{2500}{1890} - \frac{693}{1890} = \frac{1575 + 2500 - 693}{1890} = \frac{3382}{1890} = \frac{1691}{945}\] \[\frac{1691}{945} = 1\frac{746}{945}\]

Ответ: 1\(\frac{746}{945}\)