Solutions by everydaycalculation.com
1st number: 5/12, 2nd number: 1 4/21
512 - 2521 is -6584.
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Related: 10/12-25/21 5/12-50/21 5/24-25/21 5/12-25/42 15/12-25/21 5/12-75/21 5/36-25/21 5/12-25/63 25/12-25/21 5/60-25/21 35/12-25/21 5/84-25/21
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