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Introduction to Matrices
7. Systems of Equations & Matrices / Introduction to Matrices / Problem 4

What is the system of equations associated with the following augmented matrix? Please note that you don't need to solve it.

{"mathml":"<math style=\"font-family:stix;font-size:16px;\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mstyle mathsize=\"16px\"><mfenced open=\"[\" close=\"]\"><mrow><mtable><mtr><mtd><mn>4</mn></mtd><mtd><mn>7</mn></mtd><mtd><mn>5</mn></mtd></mtr><mtr><mtd><mn>3</mn></mtd><mtd><mn>7</mn></mtd><mtd><mn>6</mn></mtd></mtr><mtr><mtd><mo>-</mo><mn>5</mn></mtd><mtd><mo>-</mo><mn>7</mn></mtd><mtd><mn>4</mn></mtd></mtr></mtable><menclose notation=\"left\"><mtable><mtr><mtd><mn>3</mn></mtd></mtr><mtr><mtd><mn>19</mn></mtd></mtr><mtr><mtd><mn>31</mn></mtd></mtr></mtable></menclose></mrow></mfenced></mstyle></math>","truncated":false}

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