Solutions by everydaycalculation.com
1st number: 18/30, 2nd number: 2 12/30
1830 - 7230 is -95.
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Related: 36/30-72/30 18/60-72/30 18/30-72/60 54/30-72/30 18/90-72/30 18/30-72/90 90/30-72/30
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