Solutions by everydaycalculation.com
1st number: 10/21, 2nd number: 6 0/7
1021 - 427 is -11621.
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Related: 20/21-42/7 10/21-84/7 10/42-42/7 10/21-42/14 30/21-42/7 10/63-42/7 10/21-42/21 50/21-42/7 10/21-42/35 70/21-42/7 10/21-42/49
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