Solutions by everydaycalculation.com
1st number: 10 3/6, 2nd number: 13 3/6
636 - 816 is -31.
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Related: 63/12-81/6 63/6-81/12 63/18-81/6 63/6-81/18 63/30-81/6 63/6-81/30 63/42-81/6 63/6-81/42
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