**Problem : ** Solve the following system of equations:

y + 4x | = | 8 | |

5x + 2y | = | 13 |

(

**Problem : ** Solve the following system of equations:

2x + 2y | = | 6 | |

12 | = | 2y - x |

(

**Problem : ** Solve the following system of equations:

4y + 2x | = | 5 | |

x | = | 8 - 2y |

No solutions. The system is inconsistent.

**Problem : ** Solve the following system of equations:

2x + 2y | = | 4 | |

5y - 3x | = | 6 |

(

**Problem : ** Solve the following system of equations:

10x + 7y | = | 49 | |

10y - x | = | 70 |

(

**Problem : ** Solve the following system of equations:

2x + 9y | = | 0 | |

3x + 5y | = | 17 |

(

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