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lance54
@lance54
July 2022
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recopier et résoudre l'équation suivante
2x +7=9-x
Vous pouvez m'aider svp
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ayuda
2x + 7 = 9 - xcomme l'autre exo...2x + 7 - 7 = 9 - 7 - x2x = 2 - x2x + x = 2 - x + x3x = 23x/3 = 2/3x = 2/3TOUJOURS la même méthode.. bonnes vacances !!
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Tonio80
Soit l'équation 2x+7 = 9-x⇔ 2x+7 = 9-x⇔ 3x+7 = 9⇔ 3x = 2⇔ x = 2/3En espérant t'avoir aidé !
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Tonio80
Tu déplaces les x à gauche et les sans x à droite
lance54
d'accord merci
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