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Sagot :

Bonsoir,

9

a)

48/10 = 24/5

b)

12/24 +2/24 = 14/24 = 7/12

c)

18/15 + 2/15 = 20/15 =4/3

d)

invisible

12

a)

3/39 + 1/39 =4/39

b)

3/39 - 1/39 = 2/39

c)

invisible

d)

3/51 -1/51 = 2/51

e)

9/15 + 9/15 = 18/15 = 6/3 = 2

f)

invisible

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