Solutions by everydaycalculation.com
1st number: 3/20, 2nd number: 6 4/6
320 - 406 is -39160.
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Related: 6/20-40/6 3/20-80/6 3/40-40/6 3/20-40/12 9/20-40/6 3/60-40/6 3/20-40/18 15/20-40/6 3/20-40/30 21/20-40/6 3/20-40/42
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