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reproduire et compléter :


……………….| 1 |
……………| A | B |
………..| C | ……D | …....E |
…| 2-3x | 6x-1 | -4x-1 | 5-3x |

C = 2 - 3x + 6x - 1 = 3x + 1

D = 6x - 1 - 4x - 1 = 2x - 2

E = -4x - 1 + 5 - 3x = -7x + 4

A = 3x + 1 + 2x - 2 = 5x - 1

B = 2x - 2 - 7x + 4 = -5x + 2

5x - 1 - 5x + 2 = 1

…………………..| 1 |

……………| 5x-1 | -5x+2 |

………| 3x+1 | 2x-2 | -7x+4 |

…| 2-3x | 6x-1 | -4x-1 | 5-3x |

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