a + b + c = 2012
b = 3c + 2
a = 3b + 2 = 3 * (3c + 2) + 2 = 9c + 6 + 2 = 9c + 8
Rezulta: 9c + 8 + 3c + 2 + c = 2012
13c = 2012 - 10 = 2002
c = 2002 / 13 = 154
b = 3 * 154 + 2 = 462 + 2 = 464
a = 3 * 464 + 2 = 1392 + 2 = 1394
Verificare: 1394 + 464 + 154 = 2012 (A)
Raspuns: a = 1394; b = 464; c = 154