Question

Can someone please help me convert these equations into a matrix equation.

x+4y-z=7
x+y+z=2
-2x-2y+2z=-8

Answer 1

pretend these are written across the page and have matrix brackets around them

1 4 -1
1 1 1
-2 -2 2

x

x
y
z

=

7
2
-8

Answer 2

x+y+z=2 have the invisible 1 in front of them correct