Question

$(1 frac{3}{4} /1,125-1,75/ frac{2}{3} )*1 frac{5}{7}$

Answer 1

$1 frac{3}{4}=1,75= frac{7}{4} \ 1,125=1 frac{125}{1000}=1 frac{1}{8} = frac{9}{8} \ \ (frac{1,75}{frac{9}{8} }- frac{1,75}{ frac{2}{3} })cdot 1 frac{5}{7} = \ =1,75( frac{8}{9}- frac{3}{2})cdot frac{12}{7}= frac{7}{4} cdot ( frac{16}{18} - frac{27}{18} )cdot frac{12}{7} =3cdot(- frac{11}{18})=- frac{11}{6} =-1 frac{5}{6}$