Solutions by everydaycalculation.com
1st number: 8/30, 2nd number: 2 0/30
830 - 6030 is -2615.
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Related: 16/30-60/30 8/60-60/30 24/30-60/30 8/90-60/30 8/30-60/90 40/30-60/30 56/30-60/30
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