Solutions by everydaycalculation.com
1st number: 12/15, 2nd number: 1 17/18
1215 - 3518 is -10390.
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Related: 24/15-35/18 12/15-70/18 12/30-35/18 12/15-35/36 36/15-35/18 12/45-35/18 12/15-35/54 60/15-35/18 12/75-35/18 12/15-35/90 84/15-35/18
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