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Sagot :

Bonjour,

H = 5/3 - 5/7 x (2 + 1/3)
H = 5/3 - 5/7 x (6/3 + 1/3)
H = 5/3 - 5/7 x 7/3
H = 5/3 - 5 x 1/3
H = 5/3 - 5/3
H = 0

I = 8/3 x 8/5 - 7/5 x 2
I = 64/15 - 7/5 x 2
I = 64/15 - 14/5
I = 64/15 - 42/15
I = 22/15

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