Solutions by everydaycalculation.com
1st number: 7/10, 2nd number: 8 4/10
710 - 8410 is -7710.
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Related: 14/10-84/10 7/20-84/10 7/10-84/20 21/10-84/10 7/30-84/10 7/10-84/30 35/10-84/10 7/50-84/10 7/10-84/50 49/10-84/10 7/70-84/10 7/10-84/70
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