Solutions by everydaycalculation.com
140 - 140 is 01.
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Related: 2/40-1/40 1/40-2/40 1/80-1/40 1/40-1/80 3/40-1/40 1/40-3/40 5/40-1/40 1/40-5/40 7/40-1/40 1/40-7/40
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