Question

помогите!!!!!!!!!!!!!!!!!
с помощью формулы Гаусс​

Answer 1

Ответ:

$\left\{\begin{array}{l}3x-y+2z=-1\\x+3y-z=8\\2x+y+3z=1\end{array}\right\ \ \left\{\begin{array}{l}x+3y-z=8\\2x+y+3z=1\\3x-y+2z=-1\end{array}\right\ \ \left\{\begin{array}{l}x+3y-z=8\\{}\ \ -5y+5z=-15\\{}\ \ -10y+5z=-25\end{array}\right$

$\left\{\begin{array}{l}x+3y-z=8\\{}\ \ \ \ \ \ \ y-z=3\\{}\ \ \ \ \ \ 2y-z=5\end{array}\right\ \ \left\{\begin{array}{l}z+3y-z=8\\{}\ \ \ \ \ \ \ y-z=3\\{}\ \ \ \ \ \ \ \ \ \ \ \ z=-1\end{array}\right\ \ \left\{\begin{array}{l}z=-1\\y=3+z\\x=8-3y+z\end{array}\right\ \ \left\{\begin{array}{l}z=-1\\y=2\\x=1\end{array}\right$

$Otvet:\ \ (1;2;-1)\ .$