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Meilleure réponse !
2013-05-09T17:33:55+02:00

a) -5/7

b) -1/3

c) 1/3

d) -1

e) 20/7

f) -9/7

2013-05-09T18:39:55+02:00

a = -5/7

 

b = -3/9 = -1/3

 

c = -44 : -44 x -3 = -44 : 132 = -1/3

 

d = -3/3 = -1

 

e = -40/-14 = 20/7

 

f = -45 x2 : -7 x-10 = -90 : 70 = -9/7