Solutions by everydaycalculation.com
1st number: 10/21, 2nd number: 7 5/7
1021 - 547 is -15221.
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Related: 20/21-54/7 10/42-54/7 10/21-54/14 30/21-54/7 10/63-54/7 10/21-54/21 50/21-54/7 10/21-54/35 70/21-54/7 10/21-54/49
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