Réponse :
Cette expression : * 5n-10/5 + 2 (n+2) = 5n - 10/5 + 2n + 4 = 7n - 2 + 4 = 7n + 2
* 5(n+4) - 2 (n+9) = 5n + 20 - 2n - 18 = 3n + 2
* 6(n+1)/2 - 1 = (6n + 6) / 2 - 1 = 3n + 3 - 1 = 3n + 2
* 2(2n+1) - n = 4n + 2 - n = 3n + 2
* 7(n-2) - 4 (n-4) = 7n - 14 - 4n + 16 = 3n + 2
Cette expression : * 4n+8/2 + n -6 = 4n + 4 + n - 6 = 5n - 2
Cette expression : * 9n+6/3 = 9n+ 2
* n + 3 + 2n - 1 = 3n + 2
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Réponse :
Cette expression : * 5n-10/5 + 2 (n+2) = 5n - 10/5 + 2n + 4 = 7n - 2 + 4 = 7n + 2
* 5(n+4) - 2 (n+9) = 5n + 20 - 2n - 18 = 3n + 2
* 6(n+1)/2 - 1 = (6n + 6) / 2 - 1 = 3n + 3 - 1 = 3n + 2
* 2(2n+1) - n = 4n + 2 - n = 3n + 2
* 7(n-2) - 4 (n-4) = 7n - 14 - 4n + 16 = 3n + 2
Cette expression : * 4n+8/2 + n -6 = 4n + 4 + n - 6 = 5n - 2
Cette expression : * 9n+6/3 = 9n+ 2
* n + 3 + 2n - 1 = 3n + 2