Naloge

1.

2.

3.

$x=0$, $y=-6$, $z=0$

$x=-1$, $y=2$, $z=\frac{1}{2}$

Sistem ni rešljiv.

4.

5.

6.

$x=2$, $y=\frac{1}{2}$, $z=-3$

$x=-2$, $y=3$, $z=-\frac{1}{2}$

Ekviv. sist.	Ekviv. sist.
$A_{1}:x-2y-3z=0$ $A_{2}:0x-y-z=3$ ($A_{1}+A_{2}\rightarrow A_{2}$) $A_{3}:2y+z=-8$	$A_{1}:x-2y-3z=0$ $A_{2}:0x-y-z=3$ $A_{3}:0x+0y-z=-2$ ($A_{3}+2A_{2}\rightarrow A_{3}$)

a)	b)
$2y=3z-10$ $2x+3y-\frac{z}{2}=1$ $7x+2y-5z=-18$	$\frac{x}{2}+\frac{y}{6}+z=9$ $x+\frac{y}{2}+\frac{z}{3}=2$ $-4x+\frac{z}{9}=-7$