[tex]a.b.c - numere \\ a = 3 \times \frac{b}{2} \\ c = 2 \times a \\ a + b + c = 495[/tex]
[tex]a + \frac{2a}{3} + 2a = 495 \\ 3a + 2a + 6a = 1485 \\ 11a = 1485 \\ a = 1485 \div 11 \\ a = 135[/tex]
[tex]b = \frac{2 \times 135}{3} = 2 \times 45 = 90[/tex]
[tex]c = 2 \times a = 2 \times 135 = 270[/tex]