Solutions by everydaycalculation.com
1st number: 1 4/12, 2nd number: 1 3/5
1612 - 85 is -415.
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Related: 32/12-8/5 16/12-16/5 16/24-8/5 16/12-8/10 48/12-8/5 16/12-24/5 16/36-8/5 16/12-8/15 80/12-8/5 16/12-40/5 16/60-8/5 16/12-8/25 16/12-56/5 16/84-8/5 16/12-8/35
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