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Sagot :

Réponse :

Exercice 11

4*3+7*5+12 = 59

59/9 = 6,55

Exercice 12

1) 5+10+11+18+25 = 69

  69/5 = 13,8

2) 4+14+16+30+44 = 108

    108/5 = 21,6

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