Solutions by everydaycalculation.com
1st number: 12/30, 2nd number: 2 10/30
1230 - 7030 is -2915.
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Related: 24/30-70/30 12/60-70/30 12/30-70/60 36/30-70/30 12/90-70/30 12/30-70/90 60/30-70/30 84/30-70/30
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