Обчистити: (-1 3/7*4 2/3+1 7/9)*(-3/4)

Ответ:

$10 \frac{1}{3}$

Решение:

$( - 1 \frac{3}{7} \times 4 \frac{2}{3} + 1 \frac{7}{9} ) \times ( - \frac{3}{4} ) = ( - \frac{10 \times 14}{3 \times 3} + \frac{16}{9} ) \times ( - \frac{3}{4} ) = \frac{10 \times 14 \times 3}{3 \times 3 \times 4} - \frac{16 \times 3}{9 \times 4} = \frac{5 \times 7}{3} - \frac{4}{3} = \frac{35 - 4}{3} = \frac{31}{3} = 10 \frac{1}{3}$