Solutions by everydaycalculation.com
1st number: 4/21, 2nd number: 4 4/7
421 - 327 is -9221.
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Related: 8/21-32/7 4/21-64/7 4/42-32/7 4/21-32/14 12/21-32/7 4/21-96/7 4/63-32/7 4/21-32/21 20/21-32/7 4/21-32/35 28/21-32/7 4/21-32/49
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