1.

The solution of the system of equations whose Augmented matrix is [(1,2,3,6),(2,4,1,7),(3,2,9,14)] is

Answer»

`x=1,y=1,z=-1`
`x=-1,y=1,z=1`
`x=1,y=-1,z=1`
`x=1,y=1,z=1`

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