Solutions by everydaycalculation.com
1st number: 10/15, 2nd number: 1 7/20
1015 - 2720 is -4160.
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Related: 20/15-27/20 10/15-54/20 10/30-27/20 10/15-27/40 30/15-27/20 10/15-81/20 10/45-27/20 10/15-27/60 50/15-27/20 10/75-27/20 70/15-27/20
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