Question

Mọi người giúp mình câu này với. Cảm ơn

Answer 1

\(3\dfrac{2}{5}=\dfrac{3\times5+2}{5}=\dfrac{17}{5}\)                                          \(2\dfrac{4}{9}=\dfrac{2\times9+4}{9}=\dfrac{22}{9}\)
 

\(7\dfrac{3}{8}=\dfrac{7\times8+3}{8}=\dfrac{59}{8}\)                                          \(15\dfrac{1}{10}=\dfrac{15\times10+1}{10}=\dfrac{151}{10}\)

Answer 2

Câu 2 :

\(3\dfrac{2}{5}=\dfrac{3\times5+2}{5}==\dfrac{17}{5}\)

\(2\dfrac{4}{9}=\dfrac{2\times9+4}{9}=\dfrac{22}{9}\)

\(7\dfrac{3}{8}=\dfrac{7\times8+3}{8}=\dfrac{59}{8}\)

\(15\dfrac{1}{10}=\dfrac{15\times10+1}{10}=\dfrac{151}{10}\)

Answer 3

\(3\dfrac{2}{5}=\dfrac{3\times5+2}{5}=\dfrac{17}{5}\)

\(2\dfrac{4}{9}=\dfrac{2\times9+4}{9}=\dfrac{22}{9}\)

\(7\dfrac{3}{8}=\dfrac{7\times8+3}{8}=\dfrac{59}{8}\)

\(15\dfrac{1}{10}=\dfrac{15\times10+1}{10}=\dfrac{151}{10}\)