Răspunsuri

2014-03-14T16:58:18+02:00
{x,y} dp {2,3}
x-y=15

x/2=y/3=k => x=2k y=3k

2k-3k=15
-k=15
k=-15    => x/2=-15 x=-30     
                  y/3=-15 y=-45
Verificare -30 -(-45)= -30+45= 15