Mathematics
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current location:Mathematical operation > History of fraction calculation
    7/17+13/68
    3/10+3/8
    1/2-3/7
    9/16+7/8
    9/16-7/8
    3/17+2/51
    15/19-6/19
    9/34+19/34
    1/21+2/9
    1/3-2/7
    24/95-1/19
    11/95+13/95
    1/4+1/24
    3/8-1/3
    1/11+21/11
    18/19-17/57
    19/92+16/23
    3/10-1/4
    5/23-9/92
    5/9-1/7

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