Solutions by everydaycalculation.com
1st number: 27/30, 2nd number: 1 18/30
2730 - 4830 is -710.
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Related: 54/30-48/30 27/30-96/30 27/60-48/30 27/30-48/60 81/30-48/30 27/90-48/30 27/30-48/90
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