Solutions by everydaycalculation.com
1st number: 1 1/15, 2nd number: 1 3/12
1615 - 1512 is -1160.
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Related: 32/15-15/12 16/15-30/12 16/30-15/12 16/15-15/24 48/15-15/12 16/15-45/12 16/45-15/12 16/15-15/36 80/15-15/12 16/15-75/12 16/75-15/12 16/15-15/60 16/15-15/84
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