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Calculer et donner le resultat sous la forme la plus simple possible :

A = 1/7 - 5/7 B= 1/2 + 5/6 C= 2/5 - 3/4 D = 3/4 X 7/11 E = -2/15 X 25/6


Répondre :

bonsoir

A = 1/7 - 5/7  = -4/7

B= 1/2 + 5/6 = 3/6+5/6 = 8/6 = 4/3

C= 2/5 - 3/4 = 8/20 -15/20 = -7/20

D = 3/4 X 7/11 = 21/44

E = -2/15 X 25/6  = -50/90 = -5/9