Solutions by everydaycalculation.com
1st number: 10/21, 2nd number: 10 2/7
1021 - 727 is -20621.
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Related: 20/21-72/7 10/42-72/7 10/21-72/14 30/21-72/7 10/63-72/7 10/21-72/21 50/21-72/7 10/21-72/35 70/21-72/7 10/21-72/49
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