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Answer to Question #17347 in Matrix | Tensor Analysis for jack

Question #17347
Use an inverse matrix to solve the following system of equations.
2x – y = -3
2x + y = 7
Expert's answer
M =& | 2 -1 |
& | 2& 1 |
&
M^(-1) =& |& 0.25 0.25 |
& | -0.5 & 0.5& |

(x, y) =& | -3 | * M^(-1) = (1, 5).
& |& 7 |

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