Solutions by everydaycalculation.com
1st number: 18/20, 2nd number: 2 14/20
1820 - 5420 is -95.
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Related: 36/20-54/20 18/40-54/20 18/20-54/40 54/20-54/20 18/60-54/20 18/20-54/60 90/20-54/20
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