Solutions by everydaycalculation.com
1st number: 1 3/15, 2nd number: 1 17/18
1815 - 3518 is -6790.
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Related: 36/15-35/18 18/15-70/18 18/30-35/18 18/15-35/36 54/15-35/18 18/45-35/18 18/15-35/54 90/15-35/18 18/75-35/18 18/15-35/90
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