Solutions by everydaycalculation.com
1st number: 1 3/12, 2nd number: 7/12
1512 - 712 is 23.
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Related: 30/12-7/12 15/12-14/12 15/24-7/12 15/12-7/24 45/12-7/12 15/12-21/12 15/36-7/12 15/12-7/36 75/12-7/12 15/12-35/12 15/60-7/12 15/12-7/60 15/12-49/12 15/84-7/12 15/12-7/84
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