Solutions by everydaycalculation.com
1st number: 1/21, 2nd number: 8 0/7
121 - 567 is -16721.
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Related: 2/21-56/7 1/42-56/7 1/21-56/14 3/21-56/7 1/63-56/7 1/21-56/21 5/21-56/7 1/21-56/35 7/21-56/7 1/21-56/49
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