Solutions by everydaycalculation.com
1st number: 28/30, 2nd number: 2 24/30
2830 - 8430 is -2815.
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Related: 56/30-84/30 28/60-84/30 28/30-84/60 84/30-84/30 28/90-84/30 28/30-84/90
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