(2,4:(-0,6-3 1/2:1 3/4)*3,2

$(2.4 \div ( - 0.6 - 3 \frac{1}{2} \div 1 \frac{3}{4} )) \times 3.2 =?$

1)
$- 3 \frac{1}{2} \div 1 \frac{3}{4} = - \frac{7}{2} \times \frac{4}{7} = - 2$

2)
$- 0.6 - 2 = - 2.6$

3)
$2.4 \div ( - 2.6) = 2 \frac{4}{10} \div ( - 2 \frac{6}{10} ) = \frac{24}{10} \times ( - \frac{10}{26} ) = - \frac{12}{13}$

4)
$- \frac{12}{13} \times 3.2 = - \frac{12}{13} \times \frac{32}{10} = - \frac{6}{13} \times \frac{32}{5} = - \frac{192}{65} = - 2 \frac{62}{65} = - 2.954$

Ответ: $- 2 \frac{62}{65}$ или $- 2.954$