Question

Ответ срочно
А) -4/5*(-5/11)
Б) 3½:(-6½)

Answer 1

А)

$- \frac{4}{5} \times ( - \frac{5}{11} ) = - \frac{ 4}{5} \times - \frac{5}{11} = \frac{ - 4 \times - 5 }{5 \times 11} = \frac{20}{55} = \frac{4}{11}$

Б)

$3 \frac{1}{2} \div ( - 6 \frac{1}{2} ) = 3.5 \div - 6.5 = \frac{35}{10} \div \frac{65}{10} = \frac{35}{10} \times \frac{10}{65} = \frac{350}{650} = \frac{35}{65} = \frac{7}{13}$