Question

2supra 5-(5,1-6,7):(16supra 5)×(-3(3))

Answer 1

$\frac{2}{5} - (5.1 - 6.7) \div \frac{16}{5} \times ( - 3(3))$
$\frac{2}{5} - ( - 1.6) \times \frac{5}{16} \times ( - 9)$
$\frac{2}{5} + \frac{8}{5} \times \frac{5}{16} \times ( - 9)$
$\frac{2}{5} - \frac{9}{2}$
$- \frac{41}{10}$