Question

срочно!!!!! даю 25 балов!​

Answer 1

$- 50 \frac{2}{5} \div ( - 5.6) = \frac{252 \times 5}{5 \times 28} = \frac{9\times1 }{1 \times 1} = 9 \\ - 50 \frac{2}{5} \div ( - 5.6) + 6.4 = 9 + 6.4 = 15.4 \\ ( - 50 \frac{2}{5} \div ( - 5.6) + 6.4) \div - 1 \frac{2}{5} = 15.4 \div ( - 1 \frac{2}{5} ) = - \frac{77 \times 5}{5 \times 7} = - \frac{11 \times 1}{1 \times 1} = - 11$

Ответ: -11