Respuestas
Respuesta:
x = -2
y = 0
z = 3
Explicación paso a paso:
reduciendo ecuacion 1 y 2 reduciendo 1 y 3
2x-y+z = -1 (2) (5) 4x-2y+2z = -2 10x - 5y +5z = -5
x+2y+2z = 4 (1) x+2y+2z = 4 3x -5y +4z = 6
3x-5y+4z = 6 -------------------
5x + 4z = 2 ec. 4 13x + 9z = 1 ec. 5
resolviendo ecuaciones 4 y 5
5x + 4z = 2 (-9) - 45x - 36z = -18 7x = -14 5x +4z = 2
13x + 9z = 1 (4) 52x + 36z = 4 x = -14/7 5(-2) +4z = 2
------------------------ x = -2 -10 + 4z = 2
7x = -14 4z = 2+10
2x -y +z = -1 4z = 12
2(-2) -y +3 = -1 z = 12/4
-4 - y +3 = -1 z = 3
-y = -1+4-3
y = 0