Julie a cinq ans de plus que moi et Marc a le double de mon âge. A nous trois, nous avons 77ans. Quel est mon âge ? Mettre ce problème en équation et le résoudr
Mathématiques
hichembg92i
Question
Julie a cinq ans de plus que moi et Marc a le double de mon âge. A nous trois, nous avons 77ans. Quel est mon âge ?Mettre ce problème en équation et le résoudre.
Urgentttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt
Urgentttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt
1 Réponse
-
1. Réponse winner123
Bonjour
pas d'énervement, il suffit de raisonner
moi = x
julie = x +5
marc = 2x
x + x +5 + 2x = 77
4x = 77 - 5
4x = 72
x = 18
tu as 18 ans, julie 23 et marc 36