Question

\(\dfrac{2}{5}+\dfrac{3}{5}.\dfrac{4}{9}\)=

Answer 1

\(=\dfrac{2}{5}+\dfrac{12}{40}=\dfrac{2}{5}+\dfrac{4}{15}=\dfrac{2}{3}\)

Answer 2

2/5 + 3/5 x 4/9

= 2/5 + 4/15

=2/3

Answer 3

2/3

Answer 4

\(\dfrac{2}{5}+\dfrac{3}{5}\times\dfrac{4}{9}=\dfrac{2}{5}+\dfrac{4}{15}=\dfrac{6}{15}+\dfrac{4}{15}=\dfrac{10}{15}=\dfrac{2}{3}\)

Answer 5

2/3

Answer 6

\(\dfrac{2}{5}+\dfrac{3}{4}.\dfrac{4}{9}=\dfrac{2}{5}+\dfrac{4}{15}=\dfrac{6}{15}+\dfrac{4}{15}=\dfrac{10}{15}=\dfrac{2}{3}\)

Answer 7

2/3 nha bạn!