Răspuns :
[x-2y=3
[5x-3y=-6
[x=3+2y
[5x-3y=-6
[x=3+2y
[5x-3y=-6
5(3+2y)-3y=-6
15+10y-3y = -6
7y=-6-15= -21
y=-3
[x=3+2y
[5x-3y=-6
x=3+2 × (-3)=3-6=-3
x = -3
[x-2y=3
[5x-3y=-6
[x=3+2y
[5x-3y=-6
[x=3+2y
[5x-3y=-6
5(3+2y)-3y=-6
15+10y-3y = -6
7y=-6-15= -21
y=-3
[x=3+2y
[5x-3y=-6
x=3+2 × (-3)=3-6=-3
x = -3