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20240040010
https://adamaths.com/forum/viewtopic.php?f=117&t=5818
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20240040010
Posted:
Mon Feb 05, 2018 9:34 pm
by
ada
$\begin{align}5x+2y+8z&=77\\3x+y-3z&=7\\4x-4y+z&=29\end{align}$