Solutions by everydaycalculation.com
1st number: 12/21, 2nd number: 2 11/12
1221 - 3512 is -19784.
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Related: 24/21-35/12 12/21-70/12 12/42-35/12 12/21-35/24 36/21-35/12 12/63-35/12 12/21-35/36 60/21-35/12 12/21-35/60 84/21-35/12 12/21-35/84
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