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# The image of the point $(3,2,1)$ in the plane $2x-y+3z=7$ is :

$\begin {array} {1 1} (1)\;(1,2,3) & \quad (2)\;(2,3,1) \\ (3)\;(3,2,1) & \quad (4)\;(2,1,3) \end {array}$

(3) (2,1,3)

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