Question

solve for x,y,z

-4x=z-2y+12
y+z=12-x
8x-3y+4z=1

Answer 1

+z+x=12
8x-3y+4z=1 keep the same

Answer 2

um im sry but what do u mean?

Answer 3

my cmputer keep fozen I have close and logg -in again I'm very slow let my write on my document and give back you later,you can check back me later