Solutions by everydaycalculation.com
1st number: 1 1/4, 2nd number: 6 4/6
54 - 406 is -6512.
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Related: 10/4-40/6 5/4-80/6 5/8-40/6 5/4-40/12 15/4-40/6 5/12-40/6 5/4-40/18 25/4-40/6 5/20-40/6 5/4-40/30 35/4-40/6 5/28-40/6 5/4-40/42
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