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Bonjour est ce que qlq pourrez maider? merci.

Bonjour Est Ce Que Qlq Pourrez Maider Merci class=

Répondre :

Bonjour

A = 10/3-1/3 = 9/3 = 3

B = 7/4-9/8 = 14/8-9/8 = 5/8

C =(10/12 +7/12) x3/5 = 17/12 x 3/5 = 17/4x3. X 3/5 = 17/4 x 1/5 = 17/20

D = 3/2 x 1/9 + 2/15 x 25

= 3/18 + 2/3 x 5

= 1/6 + 10/3

= 1/6 + 20/6

= 21/6

= 7/2