Question

chuyển hỗn số thành phân số : 3\(\dfrac{4}{9}\) x 2\(\dfrac{4}{5}\)

Answer 1

\(=\dfrac{3.9+4}{9}.\dfrac{2.5+4}{5}\\ =\dfrac{31}{9}.\dfrac{14}{5}\\ =\dfrac{31.14}{9.5}\\ =\dfrac{434}{45}\)

Answer 2

\(3\dfrac{4}{9}\times2\dfrac{4}{5}=\dfrac{31}{9}\times\dfrac{14}{5}=\dfrac{434}{45}\)

Answer 3

\(3\dfrac{4}{9}\text{×}2\dfrac{4}{5}=\dfrac{31}{9}\text{×}\dfrac{14}{5}=\dfrac{434}{45}\)