Bonjour,
a) 21/9
b) 15/28
c) -15/28
d) (-21/9) / (28/15) = (-21/9) × (15/28) = (-3×7×3×5)/(3×3×4×7) = -5/4
l'opposé de -5/4 est 5/4
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Bonjour,
a) 21/9
b) 15/28
c) -15/28
d) (-21/9) / (28/15) = (-21/9) × (15/28) = (-3×7×3×5)/(3×3×4×7) = -5/4
l'opposé de -5/4 est 5/4