Solutions by everydaycalculation.com
1st number: 3 1/2, 2nd number: 4/21
72 - 421 is 13942.
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Related: 14/2-4/21 7/2-8/21 7/4-4/21 7/2-4/42 21/2-4/21 7/2-12/21 7/6-4/21 7/2-4/63 35/2-4/21 7/2-20/21 7/10-4/21 49/2-4/21 7/2-28/21 7/14-4/21
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