Bonjour qui pourrait m aider svp Je sais que 2/3 =0,66666666666667
7/28=3/2=1.5
21/14=3/2=1.5
15/20=3/4=0,75
-7/28=-1/4=-0.25
Donc les 2 inversés sont 7/28 et-7/28 car il y a le signe-
Pouvez vs m'éclairer plus svp
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