Solutions by everydaycalculation.com
1st number: 7/21, 2nd number: 1 2/7
721 - 97 is -2021.
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Related: 14/21-9/7 7/21-18/7 7/42-9/7 7/21-9/14 7/21-27/7 7/63-9/7 7/21-9/21 35/21-9/7 7/21-45/7 7/21-9/35 49/21-9/7 7/21-63/7 7/21-9/49
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