Solutions by everydaycalculation.com
18 - 18 is 01.
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Related: 2/8-1/8 1/8-2/8 1/16-1/8 1/8-1/16 3/8-1/8 1/8-3/8 1/24-1/8 1/8-1/24 5/8-1/8 1/8-5/8 1/40-1/8 1/8-1/40 7/8-1/8 1/8-7/8 1/56-1/8 1/8-1/56
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