-x+y+z=-4 x+2y+z=0 2x+3y+z=1 jawab

-x+y+z=-4
= -x=-4-y-2
-x=-6-y
-x=6+y

x+2y+z=0
= x=-2y-z

2x+3y+z=1
= 2x=1-3y-3
x=1/2-3/4y-2/2
x=1-2/2-3y/y