Solutions by everydaycalculation.com
1st number: 3/12, 2nd number: 6 4/6
312 - 406 is -7712.
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Related: 6/12-40/6 3/12-80/6 3/24-40/6 3/12-40/12 9/12-40/6 3/36-40/6 3/12-40/18 15/12-40/6 3/60-40/6 3/12-40/30 21/12-40/6 3/84-40/6 3/12-40/42
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