Solutions by everydaycalculation.com
1st number: 18/30, 2nd number: 2 10/30
1830 - 7030 is -2615.
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Related: 36/30-70/30 18/60-70/30 18/30-70/60 54/30-70/30 18/90-70/30 18/30-70/90 90/30-70/30
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