Question

Biết \(\frac{3x-y}{x+y}=\frac{1}{2}\)Vậy tỉ số \(\frac{x}{y}\)=?

Answer 1

\(\frac{3x-y}{x+y}=\frac{1}{2}\Rightarrow x+y=2\left(3x-y\right)\)

\(\Rightarrow x+y=6x-2y\)

\(\Rightarrow x-6x=-2y-y\)

\(\Rightarrow-5x=-3y\)

\(\Rightarrow\frac{x}{y}=\frac{-3}{-5}=\frac{3}{5}\)