Solutions by everydaycalculation.com
1st number: 10/15, 2nd number: 1 2/12
1015 - 1412 is -12.
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Related: 20/15-14/12 10/15-28/12 10/30-14/12 10/15-14/24 30/15-14/12 10/15-42/12 10/45-14/12 10/15-14/36 50/15-14/12 10/15-70/12 10/75-14/12 10/15-14/60 70/15-14/12 10/15-98/12 10/15-14/84
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