Question

[Trần Đăng Khang]

\(\frac{x}{y}\)= \(\frac{7}{9}\)

Hỏi x bằng mấy?

      y bằng mấy?

Answer 1

[Sherlockichi Kudoyle]

\(\frac{x}{y}=\frac{7}{9}\Rightarrow\frac{x}{7}=\frac{y}{9}=k\)

\(\Rightarrow\hept{\begin{cases}x=7k\\y=9k\end{cases}}\)