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How do you know that 21 over 30 is greater than 2 over 3

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21 over 30 is greater than 2 over 3 because 2 over 3 times 10 is 20 over 30. And 21 over 30 is greater than 21 over 30.
User Braks
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i know that 21 over 30 is greater than 2 over 3 because 3 is bigger that 2 and the 2 is less than
User Antony Mativos
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