Răspuns :
3x+y=-2/*3
-5x-3y=2
9x+3y=-6
-5x-3y=2
____________
4x=-4
x=-1
-3+y=-2
y=-2+3
y=1
VERIFICARE:
5-3=2 A
-5x-3y=2
9x+3y=-6
-5x-3y=2
____________
4x=-4
x=-1
-3+y=-2
y=-2+3
y=1
VERIFICARE:
5-3=2 A
o inmultim pe prima cu 3 si obtinem
9x+3y=-6
-5x-3y=2 prin adunarea celor 2 ecuatii obtinem
4x/=-4 x=-1
-3+y=-2
y=-2+3
y=1
9x+3y=-6
-5x-3y=2 prin adunarea celor 2 ecuatii obtinem
4x/=-4 x=-1
-3+y=-2
y=-2+3
y=1