Solutions by everydaycalculation.com
1st number: 10/21, 2nd number: 1 3/7
1021 - 107 is -2021.
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Related: 20/21-10/7 10/21-20/7 10/42-10/7 10/21-10/14 30/21-10/7 10/21-30/7 10/63-10/7 10/21-10/21 50/21-10/7 10/21-50/7 10/21-10/35 70/21-10/7 10/21-70/7 10/21-10/49
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