\(3\frac{2}{5} - 2\frac{2}{5} - {\left( {\frac{{ -...

Câu hỏi: \(3\frac{2}{5} - 2\frac{2}{5} - {\left( {\frac{{ - 1}}{2}} \right)^3} + 2\frac{1}{2}:\sqrt {\frac{{25}}{9}} \)

A \(\frac{{21}}{8}\)

B \(\frac{{21}}{7}\)

C \(\frac{{21}}{5}\)

D \(\frac{{21}}{2}\)