Question

А) 0.91 × (-10/13) - 4/7 ÷ 2 6/7

Answer 1

$a)0.91 \times ( - \frac{10}{13}) - \frac{4}{7} \div 2 \frac{6}{7} =$
$1) \frac{91}{100} \times ( - \frac{10}{13} ) = - \frac{7}{10} \:$
$2) \frac{4}{7} \times \frac{20}{7} = \frac{4}{7} \times \frac{7}{20} = \frac{1}{5}$
$3) - \frac{7}{10} - \frac{1}{5} = \\ \frac{ - 7 -2 }{10} = \\ - \frac{9}{10} = - 0.9$
$Ответ : - 0.9$