Solutions by everydaycalculation.com
1st number: 20/30, 2nd number: 1 12/30
2030 - 4230 is -1115.
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Related: 40/30-42/30 20/30-84/30 20/60-42/30 20/30-42/60 60/30-42/30 20/90-42/30 20/30-42/90
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