Solutions by everydaycalculation.com
1st number: 18/63, 2nd number: 1 7/9
1863 - 169 is -9463.
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Related: 36/63-16/9 18/63-32/9 18/63-16/18 54/63-16/9 18/63-48/9 18/63-16/27 90/63-16/9 18/63-80/9 18/63-16/45 18/63-16/63
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