Solutions by everydaycalculation.com
1st number: 20/30, 2nd number: 2 15/30
2030 - 7530 is -116.
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Related: 40/30-75/30 20/60-75/30 20/30-75/60 60/30-75/30 20/90-75/30 20/30-75/90
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