Question

x-2y+2z=11;
3x+y-z=-2;
2x+y+z=3​

Answer 1

Ответ:

Пошаговое объяснение:

x-2y+2z=11

x=11+2y-2z

x= 11+2y-2z

3x+y-z=-2

3x=-2-y+z

x=-2/3-1/3y+1/3z

x= -2/3-1/3y+1/3z

2x+y+z=3

2x=3-y-z

x=3/2-1/2y-1/2z

x=3/2-1/2y-1/2z