Question

Помогите пожалуйста срочно

Answer 1

$left { begin{array}{c}3x-4y+2z=5,\x-3y+z=-4,\-3x+2y-z=6;end{array}right. left { begin{array}{c}3x-4y+2z=5,\x-3y+z=-4,\-2x-y=2;end{array}right. left { begin{array}{c}3x-4y+2z=5,\x-3y+z=-4,\y=-2x-2;end{array}right. \ left { begin{array}{c}11x-2z=-3,\7x+z=-10,\y=-2x-2;end{array}right. left { begin{array}{c}11x-2z=-3,\z=-7x-10,\y=-2x-2;end{array}right. left { begin{array}{c}-3x=17,\y=-2x-2\z=-7x-10;end{array}right.$
$left { begin{array}{c}x=-frac{17}{3},\y=frac{28}{3}\z=frac{89}{3};end{array}right.$