Linear Algebra Examples

$[\begin{array}{c} 43 \\ 3.9 \\ d \end{array}] \cdot [\begin{array}{c} - 1 & 20 & - \frac{4}{3} \\ 2 & - 20 & 1 \\ 0 & 0 & \frac{1}{3} \end{array}]$

Step 1

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$[\begin{array}{c} 43 \\ 3.9 \\ d \end{array}] \cdot [\begin{array}{c} - 1 & 20 & - \frac{4}{3} \\ 2 & - 20 & 1 \\ 0 & 0 & \frac{1}{3} \end{array}]$