Answers

2014-04-07T13:59:18+01:00
X+2y=-1.............(1)
2x-y=3..........(2)
3x+2y-2z=-3.......(3)
solving eqn 1 and 2
x=-1-2y
2(-1-2y)-y=3
-2-4y-y=3
-5y=5
y=-1
then x=-1-2(-1)
x=1
from 3, 3x+2y-2z=-3
3(1)+2(-1)-2z=-3
1-2z=-3
-2z=-4
z=2

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