Solutions by everydaycalculation.com
1st number: 1/21, 2nd number: 10 0/7
121 - 707 is -20921.
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Related: 2/21-70/7 1/42-70/7 1/21-70/14 3/21-70/7 1/63-70/7 1/21-70/21 5/21-70/7 1/21-70/35 7/21-70/7 1/21-70/49
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