Solutions by everydaycalculation.com
1st number: 7/20, 2nd number: 3 0/10
720 - 3010 is -5320.
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Related: 14/20-30/10 7/20-60/10 7/40-30/10 7/20-30/20 21/20-30/10 7/20-90/10 7/60-30/10 35/20-30/10 7/20-30/50 49/20-30/10 7/20-30/70
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