Question

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

Answer 1

Respuesta:

x = 1,  y = 0,   z = -1

Explicación paso a paso:

2x + z -y = 1(x1)........(1)

-y + x - 2z = 3(x-2).......(2)

2x - 3y - z = 3(x-1).......(3)

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

-2x +2y + 4z = -6          -2x + 3y + z = -3

y + 5z = -5                     2y + 2z = -2

y + 5z = -5(x-2).......(4)

2y + 2z = -2(x1)........(5)

-2y - 10z = 10          -8z = 8      

2y + 2z = -2            z = -1     y = 0      x = 1

RPTA:

x = 1,  y = 0,   z = -1