October 2020 0 110 Report
67 Calculer en simplifiant si possible et vérifier avec la calculatrice
a=2/7 - 3/7 x 14/9 b= -7/8 x (2/3 - 1) c= 4/5 x 1/4 + 2/5

Pouvez vous m’aidez svp
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