Question

Помогите срочно!!!! ДАЮ 20 баллов.
12 3/7+ (146:20-(4 1/2 : 9/20-3 1/6)) * 2 1/7: 1 3/4=

Answer 1

$21frac{3}{7}+(146:20(4frac{1}{2}:frac{9}{20}-3frac{1}{6}))*2frac{1}{7}: 1frac{3}{4}= frac{87}{7}+(7,3-(frac{9}{20}*frac{20}{9}-frac{19}{6})) * 2frac{1}{7}*frac{7}{4}=frac{87}{7}+(frac{73}{10}-( 10-frac{19}{6} ))* frac{15}{7}*frac{4}{7}=frac{87}{7}+(frac{73}{10}-frac{41}{6})*frac{15}{7}*frac{4}{7}=frac{87}{7}+frac{7}{15}*frac{15}{7}*frac{4}{7}= frac{87}{7}+frac{4}{7}=13$

Пошаговое объяснение: