## Question

###### Use Gauss-Jordan row reduction to solve the given systems of equation. We suggest doing some by hand, and others using technology. HINT [See Examples 1-6.] $$ egin{aligned} -x+2 y-z &=0 \ -x-y+2 z &=0 \ 2 x &-z=4 end{aligned} $$

Use Gauss-Jordan row reduction to solve the given systems of equation. We suggest doing some by hand, and others using technology. HINT [See Examples 1-6.] $$ egin{aligned} -x+2 y-z &=0 \ -x-y+2 z &=0 \ 2 x &-z=4 end{aligned} $$

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