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Sagot :

4/3-5/9 = -1/18+5/6 A/F
5/8-5/6 = 5/12-5/8 D/H
-20/63+33/63 = 1/9+2/21 E/I
1/25-7/20 = -21/100-1/10 B/C

Donc G n’a pas de paire

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