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Sagot :

Salut,

60)

a. 16/28= 2x2x2x2/2x2x7 =4/7

b. 250/100= 2x5x5x5/2x2x5x5= 5/2

c. 180/190= 2x2x3x3x5/2x5x19 =18/19

d. 245/65 = 5x7x7/5x3 = 49/13

57)

224/280= 2x2x2x2x2x7(224) / 2x2x2x5x7(280)=4/5

54)

a. 60/40 = 2x2x3x5/2x2x2x5=3/2

b. 126/198 = 2x3x3x7/2x3x3x11=7/11

c. 105/90 =3x5x7/2x3x3x5=7/6

voilà ^^

(j'ai essayer sur ton ancien devoir mais il a été supprimé)

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