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Sagot :

MAUDMARINE

Bonjour

1)

A = 4/3 x 7/5

A = 28/15

B = 5/8 x 9/8

B = 45/64

C = 1/2 x 3/2 x 9/4

C = 3/4 x 9/4

C = 27/16

D = 5/7 x 7/6 x 1/3

D = 35/42 x 1/3

D = 35/126

2)

a. 8 x 6/7 = 48/7

b. 3/11 x 7 = 21/11

c. 5 x 13/6 = 65/6

d. 7/8 x 10 = 70/8 = (2 x 35) / (2 x 4) = 35/4.

e. 6 x 9/5 = 54/5

f. 11/9 x 4 = 44/9

g. 2 x 23/31 = 46/31

h. 12/17 x 3 = 36/17.

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