Question

Помогите пж
Дам 30б
Плиззз

Answer 1

$\displaystyle \left \{ {{-z-2t+2=4} \atop {z=-6-t}} \right.\\ \\-(-6-t)-2t+2=4\\t=4\\z=-6-4\\z=-10\\(t,z)=(4,-10)$

Answer 2

$\displaystyle\bf\\\left \{ {{-z-2t+2=4} \atop {z=-6-t}} \right. \\\\\\\left \{ {{-z-2t=2} \atop {z=-6-t}} \right. \\\\\\\left \{ {{-(-6-t)-2t=2} \atop {z=-6-t}} \right. \\\\\\\left \{ {{6+t-2t=2} \atop {z=-6-t}} \right. \\\\\\\left \{ {{-t=-4} \atop {z=-6-t}} \right. \\\\\\\left \{ {{t=4} \atop {z=-6-4}} \right.\\\\\\\left \{ {{t=4} \atop {z=-10}} \right. \\\\\\Otvet: \ \boxed{z=-10} \ \ ; \ \ \boxed{t=4}$