Răspuns :
2x+4y=2
4x+6y=0 |:2
2x+4y=2
2x+3y=0
..............
/ y=2
2x+4·2=2
2x+8=2 |-8
2x=-6 |:2
x=-3
4x+6y=0 |:2
2x+4y=2
2x+3y=0
..............
/ y=2
2x+4·2=2
2x+8=2 |-8
2x=-6 |:2
x=-3
2-4y
x=------- =1-2y
2
4(1-2y)+6y=0
4-8y+6y=0
2y=4
y=2
x=1-4=-3
x=------- =1-2y
2
4(1-2y)+6y=0
4-8y+6y=0
2y=4
y=2
x=1-4=-3