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Sagot :

AYUDA

bjr

8/6 = 2x4/2x3 = 4/3

27/18 = 9x3/9x2 = 3/2 et 3 : 2 = 1,5

15/12 = 3x5/3x4 = 5/4 et 5/4 = 5 : 4 = 1,25

32/24 = 8x4/8x3 = 4/3

et le 8

17/5

multiple de 5 en dessous de 17 = 15 car 15 : 5 = 3

=> 17/5 = 15/5 + 2/5 = 3 + 2/5

idem pour 19/3

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