Bonjour,
I = 5 - 8/11
= (5×11)/11 - 8/11
= 55/11 - 8/11
= 47/11
J = 8/14 + 15/21
= (8×3)/(14×3) + (15×2)/(21×2)
= 24/42 + 30/42
= 54/42
= (9×6)/(7×6)
= 9/7
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Bonjour,
I = 5 - 8/11
= (5×11)/11 - 8/11
= 55/11 - 8/11
= 47/11
J = 8/14 + 15/21
= (8×3)/(14×3) + (15×2)/(21×2)
= 24/42 + 30/42
= 54/42
= (9×6)/(7×6)
= 9/7