Solutions by everydaycalculation.com
1st number: 1 3/12, 2nd number: 5/21
1512 - 521 is 8584.
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Related: 30/12-5/21 15/12-10/21 15/24-5/21 15/12-5/42 45/12-5/21 15/12-15/21 15/36-5/21 15/12-5/63 75/12-5/21 15/12-25/21 15/60-5/21 15/12-35/21 15/84-5/21
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