Solutions by everydaycalculation.com
1st number: 1 3/12, 2nd number: 4/21
1512 - 421 is 8984.
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Related: 30/12-4/21 15/12-8/21 15/24-4/21 15/12-4/42 45/12-4/21 15/12-12/21 15/36-4/21 15/12-4/63 75/12-4/21 15/12-20/21 15/60-4/21 15/12-28/21 15/84-4/21
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