**Instructions:**

Solve a set of two equations with two unknowns and find out values of unknown variables x and y.

-1 . x - 2 . y | = | -2 |

2 . x + 2 . y | = | -2 |

= | ||

= | ||

= | ||

x | = | |

y | = | |

Correctness test | ||

-1 . - 2 . | = | -2 |

2 . + 2 . | = | -2 |

-1 . x - 2 . y | = | -2 |

2 . x + 2 . y | = | -2 |

x | = | -4 |

y | = | 3 |

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Equations of 2 unknowns