Solutions by everydaycalculation.com
1st number: 1/21, 2nd number: 3 9/21
121 - 7221 is -7121.
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Related: 2/21-72/21 1/42-72/21 1/21-72/42 3/21-72/21 1/63-72/21 1/21-72/63 5/21-72/21 7/21-72/21
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