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MAUDMARINE

Bonjour,

28/49  = (7 x 4) / (7 x 7) = 4/7

26/74  = (2 x 13) / (2 x 37) = 13/37

28/16x56/28  = 1 568/448 = (224 x 7) / (224 x 2) = 7/2

24/18x45/49 = 1 080/882 = (18 x 60) / (18 x 49) = 60/49.

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