Solutions by everydaycalculation.com
1st number: 15/21, 2nd number: 1 7/18
1521 - 2518 is -85126.
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Related: 30/21-25/18 15/21-50/18 15/42-25/18 15/21-25/36 45/21-25/18 15/21-75/18 15/63-25/18 15/21-25/54 75/21-25/18 15/21-25/90
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