Helllllllpppppp!!!!

Question

x y z = 1

x 2y z = -1

3x 4y 2z = -2

Answer 1

The easiest thing to do would be to use the matrix function on your calculator. I'll let you work out your calculator's details by yourself. The answer comes out to be: x=0, y=-2, z=3.

Answer 2

if the equation is all addition then

x = 0

y = -2

z = 3