Solutions by everydaycalculation.com
1st number: 4/10, 2nd number: 8 0/10
410 - 8010 is -385.
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Related: 8/10-80/10 4/20-80/10 4/10-80/20 12/10-80/10 4/30-80/10 4/10-80/30 20/10-80/10 4/50-80/10 4/10-80/50 28/10-80/10 4/70-80/10 4/10-80/70
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