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Sagot :

Bjr,

8.7 + x = 4

x = 4 - 8.7

x = - 4.7

Il faut ajouter - 4.7

LUWAN

bonjour,

Il faut y ajouter -4.7

8.7 + (-4.7) = 8.7 - 4.7 = 4

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