bonjour
aîné = 3/8 donc reste 5/8
second = 5/8 x 2/5 = 10/40 = 1/4
troisième = 1 - ( 3/8 + 1/4)
= 8/8 - ( 3/8 + 2/8)
= 8/8 - 5 /8
= 3/8
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bonjour
aîné = 3/8 donc reste 5/8
second = 5/8 x 2/5 = 10/40 = 1/4
troisième = 1 - ( 3/8 + 1/4)
= 8/8 - ( 3/8 + 2/8)
= 8/8 - 5 /8
= 3/8