Solutions by everydaycalculation.com
1st number: 10/15, 2nd number: 4 12/15
1015 - 7215 is -6215.
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Related: 20/15-72/15 10/30-72/15 10/15-72/30 30/15-72/15 10/45-72/15 10/15-72/45 50/15-72/15 10/75-72/15 10/15-72/75 70/15-72/15
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