I'm stuck on this one task where I should solve the matrix system, but I'm stuck on this part:
https://gyazo.com/fc02fbbe898b586d9901164a6173d766
What I don't understand is how to eliminate 1 2 0 -6 to 1 0 0 0.
Thanks in advance.
2026-03-28 02:09:36.1774663776
Help understanding matrix
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I rewrite the system in the normal form:
$\begin{array}{lcl} x+2y+0z & = & -6 \\ 0x+y+0z & = & -3 \\ 0x+0y+z & = & 1 \end{array} \rightarrow \begin{array}{lcl} 1x + 2*(-3)+0z & = & -6 \\ 0x+y+0z & = & -3 \\ 0x+0y+1z & = & 1 \end{array} \rightarrow \begin{array}{lcl} 1x + 0y +0z & = & 0 \\ 0x+1y+0z & = & -3 \\ 0x+0y+1z & = & 1 \end{array}$
Hope it is helpful.
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