Răspuns:
3,75; 1,25; 1
Explicație pas cu pas:
[tex] \frac{x + y + z}{3} = 2 \iff x + y + z = 6[/tex]
[tex]x = 3y[/tex]
[tex]y = z + 0.25 \iff z = y - 0.25[/tex]
[tex]3y + y + y - 0.25 = 6 \\ 5y = 6.25 \implies \bf y = 1.25[/tex]
[tex]x = 3 \cdot 1.25 \implies \bf x = 3.75[/tex]
[tex]z = 1.25 - 0.25 \implies \bf z = 1[/tex]