Solutions by everydaycalculation.com
1st number: 1 2/6, 2nd number: 1 6/8
86 - 148 is -512.
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Related: 16/6-14/8 8/6-28/8 8/12-14/8 8/6-14/16 24/6-14/8 8/6-42/8 8/18-14/8 8/6-14/24 40/6-14/8 8/6-70/8 8/30-14/8 8/6-14/40 56/6-14/8 8/6-98/8 8/42-14/8 8/6-14/56
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