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Sagot :

Réponse :

A= 12/5-21/45

A = 108/45-21/45 =87/45=29/15

B = -3/7-5/6

B =(-18-35)/42=-53/42

D =-60/-63 = 60/63=20/21

E = (44-10+13)/12=47/12

Explications étape par étape

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