Solutions by everydaycalculation.com
1st number: 7/28, 2nd number: 1 11/21
728 - 3221 is -10784.
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Related: 14/28-32/21 7/28-64/21 7/56-32/21 7/28-32/42 21/28-32/21 7/28-96/21 7/84-32/21 7/28-32/63 35/28-32/21 49/28-32/21
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