Solutions by everydaycalculation.com
1st number: 7/10, 2nd number: 4 8/10
710 - 4810 is -4110.
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Related: 14/10-48/10 7/10-96/10 7/20-48/10 7/10-48/20 21/10-48/10 7/30-48/10 7/10-48/30 35/10-48/10 7/50-48/10 7/10-48/50 49/10-48/10 7/70-48/10 7/10-48/70
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