Solutions by everydaycalculation.com
1st number: 1/63, 2nd number: 2 0/9
163 - 189 is -12563.
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Related: 2/63-18/9 1/63-36/9 3/63-18/9 1/63-54/9 1/63-18/27 5/63-18/9 1/63-90/9 1/63-18/45 7/63-18/9 1/63-18/63
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