Solutions by everydaycalculation.com
1st number: 4/21, 2nd number: 7 3/6
421 - 456 is -30742.
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Related: 8/21-45/6 4/21-90/6 4/42-45/6 4/21-45/12 12/21-45/6 4/63-45/6 4/21-45/18 20/21-45/6 4/21-45/30 28/21-45/6 4/21-45/42
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