Solutions by everydaycalculation.com
1st number: 1 1/4, 2nd number: 1 3/5
54 - 85 is -720.
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Related: 10/4-8/5 5/4-16/5 5/8-8/5 5/4-8/10 15/4-8/5 5/4-24/5 5/12-8/5 5/4-8/15 25/4-8/5 5/4-40/5 5/20-8/5 5/4-8/25 35/4-8/5 5/4-56/5 5/28-8/5 5/4-8/35
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