Question: 13. Show that the system below is inconsistent. $$ begin{aligned} x_1 + x_2 + x_3 &= 3, x_1 - x_2 + 2x_3 &= -3, 3x_1

13. Show that the system below is inconsistent.

$$

\begin{aligned}

x_1 + x_2 + x_3 &= 3,\\

x_1 - x_2 + 2x_3 &= -3,\\

3x_1 - x_2 + 5x_3 &= -2,\\

2x_1 - x_2 - x_3 &= 4.

\end{aligned}

$$

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