If the system of linear equations \( x-4 y+7 z=g \), \( \mathrm{P} ...

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If the system of linear equations \( x-4 y+7 z=g \),
\( \mathrm{P} \)
\( 3 y-5 z=h,-2 x+5 y-9 z=k \) is consistent then,
W
(1) \( g+2 h+k=0 \)
(2) \( g+h+2 k=0 \)
(3) \( 2 g+h+k=0 \)
(4) \( g+h+k=0 \)
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