Solutions by everydaycalculation.com
1st number: 3/10, 2nd number: 7 0/5
310 - 355 is -6710.
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Related: 6/10-35/5 3/10-70/5 3/20-35/5 3/10-35/10 9/10-35/5 3/30-35/5 3/10-35/15 15/10-35/5 3/50-35/5 3/10-35/25 21/10-35/5 3/70-35/5
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