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Sagot :

Réponse:

ex 1:

A=4/2 × 1/7 =2/7

B=24/7 - 8/35 = 120/35 -8/35=112/35

C=-20/9×-27/-35=540/-315 =108/-63 =36/-21

D=(6/4-1/4):3/-8 =5/4×-8/3 =-40/12=-20/6=-10/3

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