Răspunsuri

2014-01-26T14:40:21+02:00
2014-01-26T15:03:43+02:00
Xy-5=3x-2y-13  xy-3x+8=2y  x(y-3) + 8=2y
x+8y-24=2y  x=24-6y
(24-6y)y+8y-24=2y  24y-6y2+8y-24-2y=0
-6y2+30y-24=0  6y2-30y+24=0  y2-5y+4=0
(y-1)(y-4)=0
de aici mai departe tre sa te descurci ca e usor :)
2 5 2