Выражение: ( \frac{2}{3}X + \frac{1}{4} \times X - \frac{3}{5} : X + \frac{5}{2} )

Пусть X = 10:

( \frac{2}{3} \times 10 + \frac{1}{4} \times 10 - \frac{3}{5} : 10 + \frac{5}{2} )

( = \frac{20}{3} + \frac{10}{4} - \frac{3}{50} + \frac{5}{2} )

( = \frac{80}{12} + \frac{30}{12} - \frac{36}{600} + \frac{300}{120} )

( = \frac{110}{12} - \frac{6}{100} + \frac{750}{120} )

( = \frac{2200}{240} - \frac{14}{240} + \frac{1500}{240} )

( = \frac{3686}{240} )

( = 15.358333... )