Mathematics · 2019
JEE Main · 9 January 2019, Shift 2 · Q65
If the system of linear equations x-4 y+7 z= g; 3 y-5 z= h; -2 x+5 y-9 z= k is consistent, then:
If the system of linear equations
$$\begin{aligned}
& x-4 y+7 z=\mathrm{g} \\
& 3 y-5 z=\mathrm{h} \\
& -2 x+5 y-9 z=\mathrm{k}
\end{aligned}
$$
is consistent, then :
Official answer
(1)
$\displaystyle 2 g+h+k=0$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.