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elies13000321
@elies13000321
December 2020
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Bonjour j'ai besoin d'aide.
Voici exos Il faut calculer astucieusement ces calcule en les simplifiant comme l'exemple :
Voici l'exemple :
A= (+11) +(-7) -(+8) +(+3) -(+4)+(-5) +(+8)
A= (+11) +(-7) +(-8) +(+3) +(-4) +(-5) +(+8) j’ai transformé les soustractions en additions
A= (+11) +(-7) +(-8) +(+3) +(-4) +(-5) +(+8)
A= (+11) +(-7) +(+3) +(-4) +(-5) j’ai éliminé les termes opposés
A= (+11) +(+3) +(-7)+ (-4) +(-5) je regroupe les termes positifs et les termes négatifs
A = (+14) + (-16) j’ai additionné les termes positifs d’un côté et les termes négatifs de l’autre
A= (-2) j’ai calculé la somme restante
et voici les calcule :
A = (+8,4) + (-2,5) - (+8,4) + (-7,5)
B = (+3,7) - (+7) + (+4,1) - (-6,3)
C = (-2,8) + (+2,8) - (-7) + (-3,8)
D = (+4,3) - (-2,9) + (-2,9) - (-4)
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