Algebra Examples

$[\begin{array}{c} - 1 & - 1 \\ 1 & 4 \end{array}] [\begin{array}{c} x \\ y \end{array}] = [\begin{array}{c} - 4 \\ 1 \end{array}]$

Step 1

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$[\begin{array}{c} - 1 & - 1 \\ 1 & 4 \end{array}] [\begin{array}{c} x \\ y \end{array}] = [\begin{array}{c} - 4 \\ 1 \end{array}]$