Réponses

Meilleure réponse !
2014-02-26T10:59:45+01:00
Exercice 2 :

a. A = ((3/4)+(7/4)*((7/12)-(1/3))
A = (10/4)*((7/12)-(4/12))
A = (10/4)*(3/12)
A = (5/2)*(1/4)
A = 5/8

B = (4/5)*(2/9)+(2/3)*(1/3)
B = (8/45)+(2/9)
B = (8/45)+(10/45)
B = 18/45
B = 2/5

b. C = (5/7)*((3/5)+(1/5))

C = (5/7)*((3/5)+(1/5))
C = (5/7)*(4/5)
C = 20/35
C = 4/7