Solutions by everydaycalculation.com
1st number: 18/30, 2nd number: 2 3/30
1830 - 6330 is -32.
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Related: 36/30-63/30 18/60-63/30 18/30-63/60 54/30-63/30 18/90-63/30 18/30-63/90 90/30-63/30
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