Solutions by everydaycalculation.com
1st number: 1/21, 2nd number: 2 2/7
121 - 167 is -4721.
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Related: 2/21-16/7 1/21-32/7 1/42-16/7 1/21-16/14 3/21-16/7 1/21-48/7 1/63-16/7 1/21-16/21 5/21-16/7 1/21-80/7 1/21-16/35 7/21-16/7 1/21-16/49
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