Solutions by everydaycalculation.com
1st number: 12/30, 2nd number: 2 3/30
1230 - 6330 is -1710.
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Related: 24/30-63/30 12/60-63/30 12/30-63/60 36/30-63/30 12/90-63/30 12/30-63/90 60/30-63/30 84/30-63/30
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