Solutions by everydaycalculation.com
1st number: 5/10, 2nd number: 3 0/10
510 - 3010 is -52.
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Related: 5/10-60/10 5/20-30/10 5/10-30/20 15/10-30/10 5/10-90/10 5/30-30/10 25/10-30/10 5/50-30/10 5/10-30/50 35/10-30/10 5/70-30/10 5/10-30/70
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