Solutions by everydaycalculation.com
1st number: 7/28, 2nd number: 1 17/28
728 - 4528 is -1914.
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Related: 14/28-45/28 7/28-90/28 7/56-45/28 7/28-45/56 21/28-45/28 7/84-45/28 7/28-45/84 35/28-45/28 49/28-45/28
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