Solutions by everydaycalculation.com
1st number: 2/3, 2nd number: 1 6/21
23 - 2721 is -1321.
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Related: 4/3-27/21 2/3-54/21 2/6-27/21 2/3-27/42 6/3-27/21 2/3-81/21 2/9-27/21 2/3-27/63 10/3-27/21 2/15-27/21 14/3-27/21 2/21-27/21
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