Question

Срочно! нужно проверить

Answer 1

$2 \times 1 \frac{3}{4} = 2 \times \frac{7}{4} = \frac{7}{2} = 3 \frac{1}{2}$

$1 \frac{2}{7} \times ( - 14) = \frac{9}{7} \times ( - 14) =$

$- 18$

$- 7 \frac{2}{7} \div ( - 3) = - \frac{51}{7} \div ( - 3) =$

$- \frac{51}{7} \times ( - \frac{1}{3} ) = \frac{17}{7} = 2 \frac{3}{7}$

$- 3 \frac{2}{5} \div 5 = - \frac{17}{5} \times \frac{1}{5} = - \frac{17}{25}$