Question

[Trần Ngọc Hân]

_{Viết số thích hợp vào chỗ chấm} 

a]42/54=14/....=..../9

Answer 1

[Hquynh]

\(\dfrac{42}{54}=\dfrac{14}{x}=\dfrac{y}{9}\\ =>\left\{{}\begin{matrix}x=\dfrac{54.14}{42}=18\\y=\dfrac{42.9}{54}=7\end{matrix}\right.\\ =>\dfrac{42}{54}=\dfrac{14}{18}=\dfrac{7}{9}\)

Answer 2

[⭐Hannie⭐]

`42/54=(42:3)/(54:3)=14/18=(14:2)/(18:2)=7/9`