X+2y+3z=2 x+2y+3z=2 x+2y+3z=2
2x+3y-4z=-5 3x+3y-z=-3 3x+3y-z=-3
3x+y+z=3 3x+y+z=3 6x+4y=0 y=-3/2x
x+2y+3z=2
2x+3y-4z=-5
6x+2y+2z=6 5x-z=4 z=5x-4
3x-3/2x+5x-4=3 8x-3/2x=7 x=14/13
y=-3/2*14/13=-21/13 z= 70/13-4=18/13
ответ {14/13;-21/13;18/13}
2x-3y+4z=-8 2x-3y+4z=-8 2x-3y+4z=-8
x+2y-3z=3 x+2y-3z=3 x+2y-3z=3
3x+y-2z=-1 6x+2y-4z=-2 8x-y=-10 y=8x+10
4x-6y+8z=-16
3x+6y-9z=9 7x-z=-7 z=7x+7
3x+y-2z=-1
2x-3(8x+10)+4(7x+7)=-8 6x=-6 x=-1
y=-8+10=2
z=-7+7=0
ответ{-1;2;0}