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Sagot :

Réponse :

Explications étape par étape

abs (a) = abs (b) alors a = b ou a = -b

abs (x) = abs (2x-1) aolrs

x = 2x -1 ou x = -2x+1

-x = -1 ou 3x = 1

x = 1 ou x = 1/3

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