Réponse :
Explications étape par étape :
3) x - 67 = 45 → x = 45 + 67 = 112
4) 67 - x = 45 → -x = 45 - 67 = -22 → x = 22
5) 57 + 2*x = 69 → 57 + 2x = 69 → 2x = 69 - 57 = 12 → x = 12/2 = 6
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Réponse :
Explications étape par étape :
3) x - 67 = 45 → x = 45 + 67 = 112
4) 67 - x = 45 → -x = 45 - 67 = -22 → x = 22
5) 57 + 2*x = 69 → 57 + 2x = 69 → 2x = 69 - 57 = 12 → x = 12/2 = 6