Solutions by everydaycalculation.com
1st number: 10/15, 2nd number: 2 5/10
1015 - 2510 is -116.
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Related: 20/15-25/10 10/15-50/10 10/30-25/10 10/15-25/20 30/15-25/10 10/15-75/10 10/45-25/10 10/15-25/30 50/15-25/10 10/75-25/10 10/15-25/50 70/15-25/10 10/15-25/70
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