Solutions by everydaycalculation.com
1st number: 10/15, 2nd number: 1 3/7
1015 - 107 is -1621.
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Related: 20/15-10/7 10/15-20/7 10/30-10/7 10/15-10/14 30/15-10/7 10/15-30/7 10/45-10/7 10/15-10/21 50/15-10/7 10/15-50/7 10/75-10/7 10/15-10/35 70/15-10/7 10/15-70/7 10/15-10/49
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