Răspuns:
x=3
y=1
Deci
[tex] \frac{3 + 1}{3 - 1} = \frac{4}{2 } = 2[/tex]
[tex]\it \dfrac{y}{x}=\dfrac{1}{3} \Rightarrow x=3y\\ \\ \\ \dfrac{x+y}{x-y}=\dfrac{3y+y}{3y-y}=\dfrac{4y}{2y}=2[/tex]
