Solutions by everydaycalculation.com
1st number: 7/10, 2nd number: 4 0/10
710 - 4010 is -3310.
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Related: 14/10-40/10 7/10-80/10 7/20-40/10 7/10-40/20 21/10-40/10 7/30-40/10 7/10-40/30 35/10-40/10 7/50-40/10 7/10-40/50 49/10-40/10 7/70-40/10 7/10-40/70
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