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1) Prenons A = 5 et calculer B = 1/3 × (A + 5)
A
2) Calculer C = 1 × (B +5)
2 B
3) Calculer D = 1x (C + 5); arrondir aux millièmes. 2 C

4) Calculer E = 1 × (D+ 5); arrondir aux millièmes 2 D