Question

find the solution to the system of equations down below
x+y+z=-1
x-y+z=-1
x+y-z=3

A) (-2,4,-3)
B) (1/2,0,1/2)
C) (1,0,-2)
D)3/2,3/2,0)

Answer 1

C.

1,0,-2

you solve by substitution

x=1

y=0

z= -2