Question

Помогите решить задание. 40 баллов.

Answer 1

Ответ:

(x, y, z) = ( $\frac{173}{\\14}$ , $\frac{130}{7}$, $\frac{71}{14}$ )

Пошаговое объяснение:

$\left \{ {{3x-2y+z=5} \atop {x-y+3z=0}} \right.$

$\left \{ {{x-y+3z=9} \atop {-4x+5y-6z=13}} \right.$

y-8z=-22

y+6z=49

$\left \{ {{y-8z=-22} \atop {y+6z=49}} \right.$

y=$\frac{130}{7}$

z= $\frac{71}{14}$

x-$\frac{130}{7}$+3*$\frac{71}{14}$= 9

x = $\frac{173}{14}$

$\left \{ {{3*\frac{173}{14} }-2*\frac{130}{7}+\frac{71}{14}=5 \atop {\frac{173}{14} - \frac{130}{7} +3*\frac{71}{14}=9}} \atop -4* \frac{173}{14}+5*\frac{130}{7} -6*\frac{71}{14} =13\right.$

$\left \{ {{5=5} \atop {9=9}} \atop {13=13}} \right.$