Question

Срочно!!! Даю 20 баллов

Answer 1

$2 \frac{4}{15} - (2 - 1 \frac{1}{15}) \div \frac{4}{9} + \frac{9}{2} = \\ = 2 \frac{4}{15} - \frac{14}{15} \times \frac{9}{4} + \frac{9}{2} = \\ =\frac{34}{15} - \frac{21}{10} + \frac{9}{2} = \\ = \frac{34 \times 2 - 21 \times 3 + 9 \times 15}{30} = \\ = \frac{68 - 63 + 135}{30} = \frac{140}{30} = \\ = \frac{14}{3} = 4 \frac{2}{3}$