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Sagot :

MAUDMARINE

Bonjour

7/4 - 2/4 = 5/4

8/3 + 5/6 = (8 x 2) / (3 x 2) + 5/6 = 16/6 + 5/6 = 21/6 = (3 x 7) / (3 x 2) = 7/2

5/9 + 6/11 = (5 x 11) / (9 x 11) + (6 x 9) / (11 x 9) = 55/99 + 54/99 = 109/99.

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