Solutions by everydaycalculation.com
1st number: 10/15, 2nd number: 2 5/15
1015 - 3515 is -53.
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Related: 20/15-35/15 10/15-70/15 10/30-35/15 10/15-35/30 30/15-35/15 10/45-35/15 10/15-35/45 50/15-35/15 10/75-35/15 10/15-35/75 70/15-35/15
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