Exercice 5: résolution d'équations /3 Résoudre les équations suivantes: (difficulté 1)
a)4x - 1= 15 b)2x + 17 = 23 c)3x + 7 = 2 d)x + 18 = 15 e) – 5x + 7 = 16 ) - 2x - 1=7
merci d'avance
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