Question

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

Answer 1

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