Solutions by everydaycalculation.com
1st number: 3/10, 2nd number: 10 4/6
310 - 646 is -31130.
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Related: 6/10-64/6 3/20-64/6 3/10-64/12 9/10-64/6 3/30-64/6 3/10-64/18 15/10-64/6 3/50-64/6 3/10-64/30 21/10-64/6 3/70-64/6 3/10-64/42
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