Solutions by everydaycalculation.com
1st number: 1 3/12, 2nd number: 2 11/12
1512 - 3512 is -53.
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Related: 30/12-35/12 15/12-70/12 15/24-35/12 15/12-35/24 45/12-35/12 15/36-35/12 15/12-35/36 75/12-35/12 15/60-35/12 15/12-35/60 15/84-35/12 15/12-35/84
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