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Meilleure réponse !
2012-11-20T18:38:22+01:00

24-9-6 = 24-15 = 9

18+5-2 = 23-2 =21

6.5-1.5*3 = 6.5-4.5 = 2

0.6*8-3*0.2 = 4.8-0.6 = 4.2