Solutions by everydaycalculation.com
1st number: 28/30, 2nd number: 1 20/30
2830 - 5030 is -1115.
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Related: 56/30-50/30 28/60-50/30 28/30-50/60 84/30-50/30 28/90-50/30 28/30-50/90
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