Solutions by everydaycalculation.com
1st number: 6/30, 2nd number: 2 3/30
630 - 6330 is -1910.
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Related: 12/30-63/30 6/60-63/30 6/30-63/60 18/30-63/30 6/90-63/30 6/30-63/90 42/30-63/30
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