Question

Resolva os seguintes sistemas lineares:
a) 3x-4y+3z= -1
2x-y-z= -5
x-3y-z= -6

b)2x-y+z= 2
x+y-z= 0
3x-2y+3z= 4

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

Answer 1

9x - 7y = -16 2 x (-1) - 1 - z =-
z=2
X + 2y= 1

X= -1
Y= 1