Question

Решите, За Спам-БАН.

Answer 1

Ответ:

3

Решение:

$\displaystyle(83-(2\frac{1}{2} *7+12:5)):((6\frac{7}{12} +9\frac{3}{8} )*4\frac{4}{5} -55\frac{17}{30} )=(83-(\frac{5}{2} *\frac{7}{1} +2.4)):((\frac{79}{12} +\\\\+\frac{75}{8}) *\frac{24}{5} -\frac{1667}{30} )=(83-(\frac{35}{2} +\frac{24}{10} )):((\frac{158}{24} +\frac{225}{24} )*\frac{24}{5} -\frac{1667}{30}) =$

$\displaystyle=(83-(\frac{175}{10} +\frac{24}{10} )):(\frac{383}{24} *\frac{24}{5}-\frac{1667}{30} )=(83-\frac{199}{10} ):(\frac{383}{5} -\frac{1667}{30} )=\\\\=(\frac{830}{10} -\frac{199}{10} ):(\frac{2298}{30} -\frac{1667}{30} )=\frac{631}{10} :\frac{631}{30} =\frac{631}{10} *\frac{30}{631} =\frac{30}{10} =3$