A

Đáp án : 9/12

\(\dfrac{7}{4}:\dfrac{8}{3}=\dfrac{21}{32}\)

\(\dfrac{7}{6}:\dfrac{21}{4}=\dfrac{28}{126}\)

\(\dfrac{8}{5}:\dfrac{16}{7}=\dfrac{56}{80}\)

\(\dfrac{5}{12}:\dfrac{25}{4}=\dfrac{20}{300}\)

Có gì you tự rút gọn nha :>

200

\(\dfrac{4}{3}x60=\dfrac{240}{3}=80\)

D :>

Đáp án : Hình bình hành