Bonjour,
Ex. 2 :
opposés : -2/5 ; -3/7 ; 4/9 et 3/5
inverses : 5/2 ; 7/3 ; -9/4 et -5/3
Ex. 3 :
2/3 de 3/5 = 2/3 × 3/5 = (2×3)/(3×5) = 6/15
2/7 de 2/5 = 2/7 × 2/5 = (2×2)/(7×5) = 4/35
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Bonjour,
Ex. 2 :
opposés : -2/5 ; -3/7 ; 4/9 et 3/5
inverses : 5/2 ; 7/3 ; -9/4 et -5/3
Ex. 3 :
2/3 de 3/5 = 2/3 × 3/5 = (2×3)/(3×5) = 6/15
2/7 de 2/5 = 2/7 × 2/5 = (2×2)/(7×5) = 4/35