Question

Solve the system using any method.
-4x-5y-z=18
-2x-5y-2z=12
2x+5y+2z=4

Answer 1

-2x-5y-2z=12
2x+5y+2z=4
--------------
0+0+0 = 16 is false so there isnt a solution that i can see

Answer 2

you have 2 parallel lines and a cross between them; there is no solution

Answer 3

okay thanks

Answer 4

something like this :)

Answer 5

thnaks so much