Răspuns:
[tex] \frac{x}{y} = 0.75 \\ x = 0.75 y\\ 3x + y = 52 \\ 3 \times 0.75y + y = 52 \\ 2.25y + y = 52 \\ 3.25y = 52 \\ y = 16 \\ \frac{x}{y} = 0.75 \\ x= 0.75y \\ x = 0.75 \times 16 = 12[/tex]
