Question

Найдите значение выражения
2 1/6÷(8 5/12-9,5)+(23,25-9 1/8)×4

Answer 1

Ответ:

$\displaystyle 2\frac{1}{6}:\Big(8\frac{5}{12}-9,5\Big)+\Big(23,25-9\frac{1}{8}\Big)\cdot 4=\\\\\\=\frac{13}{6}:\Big(\frac{101}{12}-\frac{19}{2}\Big)+\Big(\frac{93}{4}-\frac{73}{8}\Big)\cdot 4=\frac{13}{6}:\frac{-13}{12}+\frac{113}{8}\cdot 4=\\\\\\=-\frac{13}{6}\cdot \frac{12}{13}+\frac{113}{2}=\frac{-156+4407}{78}=\frac{4251}{78}=54\frac{39}{78}=54\frac{1}{2}=54,5$