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Sagot :

Réponse :

Explications étape par étape

Bsr,

A= 4/5 +3/10 = 8/10 + 3/10 = 11/10

B = 15/4 - 16/4 = -1/4

C= 7/5 *1/2 = 7/10

D= 7/4 *2 = 14/4 = 7/2

A = 11/10

B = -1/4

C = 7/10

D = 7/2

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