Question

2x - y +z = -2
x + 2y +z = 3
3x +2y + 2z = 2​

Answer 1

Respuesta:

x=-2

y=1

z=3

Explicación paso a paso:

2x - y +z = -2

2x=  -2+y-z

x + 2y +z = 3

2y=3-x-z

3x +2y + 2z = 2​

2x+x+2y+2z=2

-2+y-z+x+2y+2z=2

x+3y+z=4

x+2y+y+z=4

x+3-x-z+y+z=4

y=1

x + 2y +z = 3

x+2+z=3

x=1-z

2x - y +z = -2

2x-1+z=-2

2x+z= -1

x+x+z= -1

x+1-z+z= -2

x= -2

2x - y +z = -2

-4-1+z= -2

z=3