Solutions by everydaycalculation.com
1st number: 10/21, 2nd number: 10 3/6
1021 - 636 is -42142.
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Related: 20/21-63/6 10/42-63/6 10/21-63/12 30/21-63/6 10/63-63/6 10/21-63/18 50/21-63/6 10/21-63/30 70/21-63/6 10/21-63/42
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