Solutions by everydaycalculation.com
1st number: 1/8, 2nd number: 7 7/8
18 - 638 is -314.
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Related: 2/8-63/8 1/16-63/8 1/8-63/16 3/8-63/8 1/24-63/8 1/8-63/24 5/8-63/8 1/40-63/8 1/8-63/40 7/8-63/8 1/56-63/8 1/8-63/56
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