$$3x-11y=-1; 2x-5y=-3; x=; y=$$
$z=-4$
$$z=x$$ $$2x-5y=-3$$ $$3x-11y=-1$$
$$x=z$$
$$2z-5y=-3$$ $$3z-11y=-1$$
$$y=\frac{2}{5}z+\frac{3}{5}$$ $$z=\frac{11}{3}y-\frac{1}{3}$$
$$z=\frac{11}{3}\left(\frac{2}{5}z+\frac{3}{5}\right)-\frac{1}{3}$$
$$z=-4$$
$$y=\frac{2}{5}\left(-4\right)+\frac{3}{5}$$
$$y=-1$$
$$x=-4$$
$$x=-4$$ $$y=-1$$ $$z=-4$$
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