Solutions by everydaycalculation.com
1st number: 7/28, 2nd number: 6 3/7
728 - 457 is -17328.
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Related: 14/28-45/7 7/28-90/7 7/56-45/7 7/28-45/14 21/28-45/7 7/84-45/7 7/28-45/21 35/28-45/7 7/28-45/35 49/28-45/7 7/28-45/49
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