Solutions by everydaycalculation.com
1st number: 5/28, 2nd number: 10 4/6
528 - 646 is -88184.
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Related: 10/28-64/6 5/56-64/6 5/28-64/12 15/28-64/6 5/84-64/6 5/28-64/18 25/28-64/6 5/28-64/30 35/28-64/6 5/28-64/42
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