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7 9. Сравните 5/9 и 7/9. -7/9-5/7. 9-5 5/7. Сравните 5/7 и 7/9.
Сравните 5/9 и 7/9. -7/9-5/7. 9-5 5/7. Сравните 5/7 и 7/9.

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