\(\dfrac{x}{5}\)=\(\dfrac{2}{3}\)

x.3=5.2

x.3=10

x = 10:3

x=  \(\dfrac{10}{3}\)

=\(\dfrac{2}{5}\):\(\dfrac{2}{5}\)+(\(\dfrac{7}{20}\)+\(\dfrac{3}{10}\)).\(\dfrac{5}{9}\)

= \(\dfrac{2}{5}\).\(\dfrac{5}{2}\)+    \(\dfrac{13}{20}\).    \(\dfrac{5}{9}\)

=  1     +    \(\dfrac{13}{36}\)

=       \(\dfrac{49}{36}\)

A) em sẽ nói bạn bên cạnh gợi ý .

B) e sẽ không nói cô ahihi

C) ............ e sẽ gợi ý cho bạn 

D