Solutions by everydaycalculation.com
1st number: 1 3/9, 2nd number: 2 4/6
129 - 166 is -43.
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Related: 24/9-16/6 12/9-32/6 12/18-16/6 12/9-16/12 36/9-16/6 12/9-48/6 12/27-16/6 12/9-16/18 60/9-16/6 12/9-80/6 12/45-16/6 12/9-16/30 84/9-16/6 12/63-16/6 12/9-16/42
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