Réponse :
4/5-2/5×1/3
=4/5 -(2×1)/(5×3)
=4/5-2/15
=(12-2)/15
=10/15
=(10÷5)/(15÷5)
=2/3
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Réponse :
4/5-2/5×1/3
=4/5 -(2×1)/(5×3)
=4/5-2/15
=(12-2)/15
=10/15
=(10÷5)/(15÷5)
=2/3