Solutions by everydaycalculation.com
1st number: 12/30, 2nd number: 2 11/12
1230 - 3512 is -15160.
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Related: 24/30-35/12 12/30-70/12 12/60-35/12 12/30-35/24 36/30-35/12 12/90-35/12 12/30-35/36 60/30-35/12 12/30-35/60 84/30-35/12 12/30-35/84
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