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Sagot :

Bonjour,

5x + 3 + 2x - 1 = 7x + 2

2x - 1 + (-4x + 5) = -2x + 4

-4x + 5 + (-5x - 7) = -9x - 2

7x + 2 + (-2x + 4) = 5x + 6

-2x + 4 + (-9x - 2) = -11x + 2

5x + 6 + (-11x + 2) = -6x +8

Réponse:

Bonjour :)

Explications étape par étape:

Bon courage !

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