Solutions by everydaycalculation.com
1st number: 10/15, 2nd number: 1 1/15
1015 - 1615 is -25.
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Related: 20/15-16/15 10/15-32/15 10/30-16/15 10/15-16/30 30/15-16/15 10/15-48/15 10/45-16/15 10/15-16/45 50/15-16/15 10/15-80/15 10/75-16/15 10/15-16/75 70/15-16/15
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