Solutions by everydaycalculation.com
1st number: 8/30, 2nd number: 1 5/30
830 - 3530 is -910.
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Related: 16/30-35/30 8/30-70/30 8/60-35/30 8/30-35/60 24/30-35/30 8/90-35/30 8/30-35/90 40/30-35/30 56/30-35/30
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