Question

2x-y+z=2
4x-3y+2z=2
x+y+z=3

Answer 1

-4x+2y-2z=2
4x -3y+2z=2
__________
-y=4
y= -4

2x-y+z=2
x+y+z=3
________
3x+2z=5

-4x-2z=4
3x+2z=5
________
- x=9
x= -9

x+y+z=3
-9-4+z=3
-13+z=3
z=3+13
z=16