Solutions by everydaycalculation.com
1st number: 1 4/12, 2nd number: 3 9/12
1612 - 4512 is -2912.
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Related: 32/12-45/12 16/12-90/12 16/24-45/12 16/12-45/24 48/12-45/12 16/36-45/12 16/12-45/36 80/12-45/12 16/60-45/12 16/12-45/60 16/84-45/12 16/12-45/84
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