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lucdur2014
@lucdur2014
June 2021
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Pouvez vous m'expliquer comment résoudre cet exercice.
Merci
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winner123
Verified answer
1) première figure
périmètre = x + 7 + x + x + 14 = 3 x + 21
deuxième figure = 3 x + 6 x + 11 = 9 x + 11
2) 3 x +21 = 9 x + 11
3 x - 9 x = 11 - 21
- 6 x = - 10
x = 10/6 ou 5 /3
pour x = 5/3 , les 2 figures ont le même périmètre
1 votes
Thanks 1
lucdur2014
Merci beaucoup pour ta réponse.
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Verified answer
1) première figurepérimètre = x + 7 + x + x + 14 = 3 x + 21
deuxième figure = 3 x + 6 x + 11 = 9 x + 11
2) 3 x +21 = 9 x + 11
3 x - 9 x = 11 - 21
- 6 x = - 10
x = 10/6 ou 5 /3
pour x = 5/3 , les 2 figures ont le même périmètre