Question

(56 - 38) : 34 - (38 + 720) : 1целую920
Заранее сяпки)

Answer 1

$( frac{5}{6} - frac{3}{8} ) : frac{3}{4} - ( frac{3}{8} + frac{7}{20} ) : 1 frac{9}{20} =( frac{20}{24} - frac{9}{24} ) : frac{3}{4} - ( frac{15}{40} + frac{14}{40} ) : 1 frac{9}{20} =$$= frac{11}{24} : frac{3}{4} - frac{29}{40} : 1 frac{9}{20} = frac{11}{24} * frac{4}{3} - frac{29}{40} * frac{20}{29} = frac{11}{6} * frac{1}{3} - frac{1}{2} = frac{11}{18} - frac{1}{2} =$$=frac{11}{18} - frac{9}{18} = frac{2}{18} = frac{1}{9}$