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Sagot :

GGDU19

Bonjour,

A= 1/72 - 3/9

 = 1/72 - (3*8)/(8*9)

 =1/72 - 24/72

 =(1-24)/72

A=-23/72

C=5 - 7/10

 =(5*10)/10 - 7/10

 =50/10 - 7/10

 =(50-7)/10

C=43/10

E=9/3 + 1

 =3+1

E=4

G=8/54 + 1/6

 =8/54 + (1*9)/(6*9)

 =8/54 + 9/54

 =(8+9)/54

G=17/54

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