4x+y-2z=0

2x-3y+3z=9

-6x-2y+z=0

4x+y-2z=0

2x-3y+3z=9

-6x-2y+z=0

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4X + Y - 2z = 0

2X -3Y + 3Z = 9

-6X - 2Y + Z = 0

4X +Y - 2Z = 0 0X + 7 Y - 8Z = -18 4X + Y - 2Z = 0 4X + Y -2Z = 0

-2 ( 2X - 3Y + 3Z = 9) 3(2X - 3 Y + 3Z) = 9 4 ( 0X -11y +10Z = 27 ) 0X - 9Y +0Z = 18

-6X -2Y +Z = 0 -6X -2Y + Z =0 5 ( 0X +7Y -8Z = -18) 0X +7Y -8Z = -18

4X + Y - 2Z = 0 4X + Y -2Z = 0 4X +0 Y +0Z = 3

0X + Y + 0Z =-2 0X + Y+ 0Z =-2 0X + Y + 0Z = -2

0X + 0Y - 8Z = -4 0X + 0Y +Z = 1/2 0X + 0Y + Z = 1/2

X = 3 Y = -2 Z = 1/2 are the answers:

Following procedure:

first eliminated X in both sides by multiplying 2nd equation by -2 and adding with first one

and 2nd equation by +3 and adding to 3rd one. The System reduces from 3 equation to 2 , and solve

then Y, and Z will be substituted to 1st equation and value of X will be calculated.

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