Solutions by everydaycalculation.com
1st number: 1/63, 2nd number: 2 6/7
163 - 207 is -17963.
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Related: 2/63-20/7 1/63-40/7 1/63-20/14 3/63-20/7 1/63-60/7 1/63-20/21 5/63-20/7 1/63-20/35 7/63-20/7 1/63-20/49
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