# 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

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 |

& | 2& 1 |

&

M^(-1) =& |& 0.25 0.25 |

& | -0.5 & 0.5& |

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

& |& 7 |

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