Solutions by everydaycalculation.com
1st number: 1/21, 2nd number: 3 9/12
121 - 4512 is -31184.
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Related: 2/21-45/12 1/21-90/12 1/42-45/12 1/21-45/24 3/21-45/12 1/63-45/12 1/21-45/36 5/21-45/12 1/21-45/60 7/21-45/12 1/21-45/84
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