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Sagot :

Réponse:

63:

A)3/10=3*3/10*3

=9/30

B)1/-3=-1/3=-1*10/3*10=-10/30

C)-2=-2/1=-2*30/1*30=-60/30

D)2,1/0,6=21/6=21*5/6*5=105/30

E)-18/90=-6*3/30*3=-6/30

F) 1/-60=-1/60 =(-1/2)//(60/2)=(-1/2)//30

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