Solutions by everydaycalculation.com
1st number: 1 2/3, 2nd number: 18/21
53 - 1821 is 1721.
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Related: 10/3-18/21 5/3-36/21 5/6-18/21 5/3-18/42 15/3-18/21 5/3-54/21 5/9-18/21 5/3-18/63 25/3-18/21 5/3-90/21 5/15-18/21 35/3-18/21 5/21-18/21
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