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NGUYENSO9

Bonjour,

24/36 = (6 * 4)/(6 * 6) = 4/6 = 2/3

20/30 = (2 * 10)/(3 * 10) = 2/3

22/55 = (2 * 11)/(5 * 11) = 2/5

6/15 = (3 * 2)/(3 * 5) = 2/5

32/72 = (8 * 4)/(8 * 9) = 4/9

40/90 = (4 * 10)/(9 * 10) = 4/9

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