Solutions by everydaycalculation.com
1st number: 1/21, 2nd number: 1 7/9
121 - 169 is -10963.
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Related: 2/21-16/9 1/21-32/9 1/42-16/9 1/21-16/18 3/21-16/9 1/21-48/9 1/63-16/9 1/21-16/27 5/21-16/9 1/21-80/9 1/21-16/45 7/21-16/9 1/21-16/63
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