2.23 $2x_1 - x_2 + 4x_3 = 6$ $x_1 + 3x_2 + 3x_3 = -7$ $-x_1 + 2x_2 = -12$
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Step 1: Rewrite the system of equations in matrix form: \[ \begin{bmatrix} 2 & -1 & 4 \\ 1 & 3 & 3 \\ -1 & 2 & 0 \end{bmatrix} \begin{bmatrix} x_1 \\ x_2 \\ x_3 \end{bmatrix} = \begin{bmatrix} 6 \\ -7 \\ -12 \end{bmatrix} \] Show more…
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