Solutions by everydaycalculation.com
1st number: 12/15, 2nd number: 1 6/10
1215 - 1610 is -45.
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Related: 24/15-16/10 12/15-32/10 12/30-16/10 12/15-16/20 36/15-16/10 12/15-48/10 12/45-16/10 12/15-16/30 60/15-16/10 12/15-80/10 12/75-16/10 12/15-16/50 84/15-16/10 12/15-16/70
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