Solutions by everydaycalculation.com
1st number: 1/21, 2nd number: 12 6/7
121 - 907 is -26921.
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Related: 2/21-90/7 1/42-90/7 1/21-90/14 3/21-90/7 1/63-90/7 1/21-90/21 5/21-90/7 1/21-90/35 7/21-90/7 1/21-90/49
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