Solutions by everydaycalculation.com
1st number: 12/30, 2nd number: 1 6/10
1230 - 1610 is -65.
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Related: 24/30-16/10 12/30-32/10 12/60-16/10 12/30-16/20 36/30-16/10 12/30-48/10 12/90-16/10 12/30-16/30 60/30-16/10 12/30-80/10 12/30-16/50 84/30-16/10 12/30-16/70
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