Solutions by everydaycalculation.com
1st number: 18/20, 2nd number: 2 1/12
1820 - 2512 is -7160.
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Related: 36/20-25/12 18/20-50/12 18/40-25/12 18/20-25/24 54/20-25/12 18/20-75/12 18/60-25/12 18/20-25/36 90/20-25/12 18/20-25/60 18/20-25/84
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