Question

Билет 24
Вычислите
Пж по действиям

Answer 1

$3 \frac{5}{9} \div ( - 2 \frac{2}{3} ) = \frac{32}{9} \div ( - \frac{8}{3} ) = - \frac{32 \times 3}{9 \times 8} = \\ = - \frac{4}{3} = - 1 \frac{1}{3}$

$- 18 \div ( - \frac{9}{14} ) = \frac{18 \times 14}{9} = 2 \times 14 = 28$

$- 4 \frac{1}{11} \div 2 \frac{19}{22} = - \frac{45}{11} \div \frac{63}{22} = - \frac{45 \times 22}{11 \times 63} = \\ = - \frac{5 \times 2}{7} = - \frac{10}{7} = - 1 \frac{3}{7}$

$- 4.5 \div ( - 0.9) = - 45 \div ( - 9) = 5$

$( - \frac{16}{21} ) \div ( - 4) = \frac{16}{21 \times 4} = \frac{4}{21}$