Solutions by everydaycalculation.com
1st number: 8/21, 2nd number: 10 3/6
821 - 636 is -42542.
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Related: 16/21-63/6 8/42-63/6 8/21-63/12 24/21-63/6 8/63-63/6 8/21-63/18 40/21-63/6 8/21-63/30 56/21-63/6 8/21-63/42
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