Solutions by everydaycalculation.com
1st number: 3/10, 2nd number: 8 0/10
310 - 8010 is -7710.
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Related: 6/10-80/10 3/20-80/10 3/10-80/20 9/10-80/10 3/30-80/10 3/10-80/30 15/10-80/10 3/50-80/10 3/10-80/50 21/10-80/10 3/70-80/10 3/10-80/70
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