Solutions by everydaycalculation.com
1st number: 5/10, 2nd number: 7 2/10
510 - 7210 is -6710.
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Related: 5/20-72/10 5/10-72/20 15/10-72/10 5/30-72/10 5/10-72/30 25/10-72/10 5/50-72/10 5/10-72/50 35/10-72/10 5/70-72/10 5/10-72/70
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