Solutions by everydaycalculation.com
1st number: 12/30, 2nd number: 1 5/30
1230 - 3530 is -2330.
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Related: 24/30-35/30 12/30-70/30 12/60-35/30 12/30-35/60 36/30-35/30 12/90-35/30 12/30-35/90 60/30-35/30 84/30-35/30
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