Solutions by everydaycalculation.com
1st number: 7/28, 2nd number: 1 14/28
728 - 4228 is -54.
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Related: 14/28-42/28 7/28-84/28 7/56-42/28 7/28-42/56 21/28-42/28 7/84-42/28 7/28-42/84 35/28-42/28 49/28-42/28
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