Question

\(\frac{12}{9}\)x\(\frac{3}{7}\)+\(\frac{8}{3}\)x\(\frac{10}{14}\)=?

Answer 1

         \(\frac{12}{9}x\frac{3}{7}+\frac{8}{3}x\frac{10}{14}\)

      \(=\frac{4}{3}x\frac{3}{7}+\frac{8}{3}x\frac{5}{7}\)

      \(=\frac{4}{7}+\frac{40}{21}\)

      \(=\frac{12}{21}+\frac{40}{21}\)

       \(=\frac{52}{21}\) 

Tham khảo nha !!! 

Answer 2

52/21

Answer 3

(đề bài)

= 4/3.3/7+8/3.5/7

=    4/7   +   40/21

=            52/21