Solutions by everydaycalculation.com
1st number: 10/21, 2nd number: 3 0/7
1021 - 217 is -5321.
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Related: 20/21-21/7 10/21-42/7 10/42-21/7 10/21-21/14 30/21-21/7 10/21-63/7 10/63-21/7 50/21-21/7 10/21-21/35 70/21-21/7 10/21-21/49
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