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Mathismartin
@Mathismartin
May 2019
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Bonjour, je bloque sur cet exercice pourriez-vous m'aider svp merci :
Calculer en détaillant
a: 1-2+3-4+5-6+7-8+9
b: 1-(2+3)-4+(5-6)+7-(8+9)
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winner123
Verified answer
Bonjour
tu pousses un peu le bouchon !
a = 1 - 2 + 3 - 4 + 5 - 6 + 7 - 8 + 9
a = 25 - 20 = 5
tu fais le b
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Bonjour,
Voilà la réponse
Calculer en détaillant
a) 1-2+3-4+5-6+7-8+9
a) -1 + -1 + -1 + -1 + 9
a) -4 + 9
a) 5
b) 1-(2+3)-4+(5-6)+7-(8+9)
b) 1-5-4+-1+7-17
b) 1-9+-18+7
b) -8 + -11
b) -19
1 votes
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Verified answer
Bonjourtu pousses un peu le bouchon !
a = 1 - 2 + 3 - 4 + 5 - 6 + 7 - 8 + 9
a = 25 - 20 = 5
tu fais le b
Voilà la réponse
Calculer en détaillant
a) 1-2+3-4+5-6+7-8+9
a) -1 + -1 + -1 + -1 + 9
a) -4 + 9
a) 5
b) 1-(2+3)-4+(5-6)+7-(8+9)
b) 1-5-4+-1+7-17
b) 1-9+-18+7
b) -8 + -11
b) -19