Solutions by everydaycalculation.com
1st number: 5/15, 2nd number: 1 10/15
515 - 2515 is -43.
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Related: 10/15-25/15 5/15-50/15 5/30-25/15 5/15-25/30 5/15-75/15 5/45-25/15 5/15-25/45 25/15-25/15 5/75-25/15 5/15-25/75 35/15-25/15
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