👤

13x y+13y+12x+11=0 Va rog ajutati-ma!!

Răspuns :

13x+y+13y+12x+11=0
⇒13x+12x+y+13y+11=0
⇒25x+14y+11=0
⇒25x+14y=0-11
⇒25x+14y=-11;
⇒x,y∈Z[multimea numerelor intregi];
⇒x=-1⇒y=1;
⇒x,y∈[[-1,1];