(Задание 1.4) 1 3/4:1.125-1.75:2/3 * 1 5/7

Решите задачу:

$1 \frac{3}{4} \div 1.125 - 1.75 \div \frac{2}{3} \times 1 \frac{5}{7} = \frac{7}{4 } \div 1 \frac{1}{8} - 1 \frac{3}{4} \div \frac{2}{3} \times \frac{12}{7} = \frac{7}{4} \times \frac{8}{9} - \frac{7}{4} \times \frac{3}{2} \times \frac{12}{7} = \frac{7 \times 2}{9} - \frac{3 \times 3}{2} = \frac{14}{9} - \frac{9}{2} = 1 \frac{5}{9} - 4 \frac{1}{2} = 1 \frac{10}{18} - 4 \frac{9}{18} = - 3 + \frac{1}{18} = - 2 \frac{17}{18}$