Solutions by everydaycalculation.com
1st number: 4/21, 2nd number: 10 3/6
421 - 636 is -43342.
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Related: 8/21-63/6 4/42-63/6 4/21-63/12 12/21-63/6 4/63-63/6 4/21-63/18 20/21-63/6 4/21-63/30 28/21-63/6 4/21-63/42
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