If the system of linear equations $x - 4y + 7z = g$; $3y - 5z = h$; $-2x + 5y - 9z = k$ is consistent, then: (1) $g + h + 2k = 0$ (2) $g + 2h + k = 0$ (3) $2g + h + k = 0$ (4) $g + h + k = 0$
If the system of linear equations $x - 4y + 7z = g$; $3y - 5z = h$; $-2x + 5y - 9z = k$ is consistent, then:\\
(1) $g + h + 2k = 0$\\
(2) $g + 2h + k = 0$\\
(3) $2g + h + k = 0$\\
(4) $g + h + k = 0$