Solutions by everydaycalculation.com
1st number: 1 4/6, 2nd number: 10 4/6
106 - 646 is -91.
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Related: 20/6-64/6 10/12-64/6 10/6-64/12 30/6-64/6 10/18-64/6 10/6-64/18 50/6-64/6 10/30-64/6 10/6-64/30 70/6-64/6 10/42-64/6 10/6-64/42
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