Răspuns:
-3x - 3y - 8 = y + 2
2x + 8 - 2 = -3y
-3x - 4y = 10 (×2)
2x + 3y = -6 (×3)
-6x - 8y = 20
6x + 9y = -18
y = 2
schimbam in a doua ecuatie:
2x + 3(2) = -6
2x + 6 = -6
2x = -6 -6
2x = -12
x = -6