Solutions by everydaycalculation.com
1st number: 5/10, 2nd number: 8 4/10
510 - 8410 is -7910.
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Related: 5/20-84/10 5/10-84/20 15/10-84/10 5/30-84/10 5/10-84/30 25/10-84/10 5/50-84/10 5/10-84/50 35/10-84/10 5/70-84/10 5/10-84/70
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