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Sagot :

Réponse :

Explications étape par étape*

Bonjour,

3x + 16= -8

3x = -8 -16

3x = -24

x= -24/3 = -8

12+15x= -3+7

15x = -3+7-12

15x = -8

x= -8/15

13-4= 15x - 7x

9 = 8x

x = 9/8

11+7= 5x

18 = 5x

x= 18/5

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