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22 August, 00:30

4/7 of marbles are blue in 4/21 of marbles are red how many times more blue marbles do you have been red

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  1. 22 August, 00:40
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    Convert bottom number to same number

    4/7 times 3/3=12/21

    12/21=blue

    4/21=red

    how many more blue than red

    12/21-4/21=8/21
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