Câu trả lời:

A=\(7\frac{4}{15}-3\frac{2}{9}-2\frac{4}{15}\)

   =\(7\frac{4}{15}-2\frac{4}{15}-3\frac{2}{9}\)

  = \(5-3\frac{2}{9}\)

  = \(5-\frac{29}{9}\)

  = \(\frac{45}{9}-\frac{29}{9}\)

  = \(\frac{11}{9}\)

  =\(1\frac{2}{9}\)