Solutions by everydaycalculation.com
1st number: 1 3/9, 2nd number: 9/12
129 - 912 is 712.
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Related: 24/9-9/12 12/9-18/12 12/18-9/12 12/9-9/24 36/9-9/12 12/9-27/12 12/27-9/12 12/9-9/36 60/9-9/12 12/9-45/12 12/45-9/12 12/9-9/60 84/9-9/12 12/9-63/12 12/63-9/12 12/9-9/84
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