Solutions by everydaycalculation.com
1st number: 1 10/30, 2nd number: 1 19/30
4030 - 4930 is -310.
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Related: 80/30-49/30 40/30-98/30 40/60-49/30 40/30-49/60 40/90-49/30 40/30-49/90
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