Solutions by everydaycalculation.com
1st number: 18/20, 2nd number: 3 3/20
1820 - 6320 is -94.
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Related: 36/20-63/20 18/40-63/20 18/20-63/40 54/20-63/20 18/60-63/20 18/20-63/60 90/20-63/20
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