Solutions by everydaycalculation.com
1st number: 1 3/12, 2nd number: 12/30
1512 - 1230 is 1720.
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Related: 30/12-12/30 15/12-24/30 15/24-12/30 15/12-12/60 45/12-12/30 15/12-36/30 15/36-12/30 15/12-12/90 75/12-12/30 15/12-60/30 15/60-12/30 15/12-84/30 15/84-12/30
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