Réponse:
a 2/3 X 4/5 = 2 X 4 / 3 X 5= 8 /15
b 3 X 5/2 = 3 X 5 / 2 = 15/2
c 7/20 X 9/4 = 7 X 9 / 20 X 4 = 63/80
d 3/7 X 6/7 = 3 X 6 / 7 X 7 = 18/49
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Réponse:
a 2/3 X 4/5 = 2 X 4 / 3 X 5= 8 /15
b 3 X 5/2 = 3 X 5 / 2 = 15/2
c 7/20 X 9/4 = 7 X 9 / 20 X 4 = 63/80
d 3/7 X 6/7 = 3 X 6 / 7 X 7 = 18/49