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Sagot :

Bonjour,

3x + 7 = x - 4

3x - x = - 4 - 7

2x = -11

x = -11/2

6x + 11 = 9x + 7

6x - 9x = 7 - 11

-3x = -4

x = -4/-3

x = 4/3

MAARIINEEH

C’est super simple quand tu auras la réponse, ne t’inquiete Pas !

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