Solutions by everydaycalculation.com
1st number: 7/10, 2nd number: 8 0/10
710 - 8010 is -7310.
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Related: 14/10-80/10 7/20-80/10 7/10-80/20 21/10-80/10 7/30-80/10 7/10-80/30 35/10-80/10 7/50-80/10 7/10-80/50 49/10-80/10 7/70-80/10 7/10-80/70
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