Solutions by everydaycalculation.com
1st number: 3/12, 2nd number: 4 4/15
312 - 6415 is -24160.
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Related: 6/12-64/15 3/24-64/15 3/12-64/30 9/12-64/15 3/36-64/15 3/12-64/45 15/12-64/15 3/60-64/15 3/12-64/75 21/12-64/15 3/84-64/15
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