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Sagot :

Bonsoir,

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

6x-1  -4x -1 = 2x-2

-4x-1 +5 -3x =  -7x +4

3x +1 + 2x-2  = 5x -1

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

5x -1  -5x +2 =  1

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