Solutions by everydaycalculation.com
1st number: 8/15, 2nd number: 1 4/12
815 - 1612 is -45.
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Related: 16/15-16/12 8/15-32/12 8/30-16/12 8/15-16/24 24/15-16/12 8/15-48/12 8/45-16/12 8/15-16/36 40/15-16/12 8/15-80/12 8/75-16/12 8/15-16/60 56/15-16/12 8/15-16/84
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