Solutions by everydaycalculation.com
1st number: 20/28, 2nd number: 2 1/12
2028 - 2512 is -11584.
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Related: 40/28-25/12 20/28-50/12 20/56-25/12 20/28-25/24 60/28-25/12 20/28-75/12 20/84-25/12 20/28-25/36 20/28-25/60 20/28-25/84
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