Respuesta :

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

2) x= y + 2z - 5
y= x -2z + 5
z= 1/2x -1/2y + 5/2

3) h= 2/53x -5/53z + 12/53
x= 53/2h +5/2z - 6
z= -53/5h + 2/5x + 12/5

Hope that helps, not sure if that’s what you needed