Question

2 помогите срочно 35 баллов дам

Answer 1

$3frac{1}{9}:2frac{1}{3}-2frac{5}{6}=frac{28}{9}:frac{7}{3}-frac{17}{6}=frac{28cdot 3}{9cdot 7}-frac{17}{6}=frac{4}{3}-frac{17}{6}=-frac{9}{6}=-frac{3}{2}=-1,5\\\10frac{16}{17}:8frac{5}{11}+1frac{2}{3}=frac{186}{17}:frac{93}{11}+frac{5}{3}=frac{186cdot 11}{17cdot 93}+frac{5}{3}=frac{2046}{1581}+frac{5}{3}=\\=frac{682}{527}+frac{5}{3}=frac{22cdot 31}{17cdot 31}+frac{5}{3}=frac{22}{17}+frac{5}{3}=frac{66+85}{17cdot 3}=frac{151}{51}=2frac{49}{51}$