KANDOMOS KANDOMOS Mathématiques Answered Bonjour petite anecdote: Si on pose : x = 0, 99999…, alors : 10 x = 9, 9999… 10 x – x = 9,9999… – x 9 x = 9,9999… – 0,9999… 9 x = 9 x = 1 d’où : 0,99999… = 1