Solutions by everydaycalculation.com
1st number: 1/5, 2nd number: 1 2/10
15 - 1210 is -11.
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Related: 2/5-12/10 1/5-24/10 1/10-12/10 1/5-12/20 3/5-12/10 1/5-36/10 1/15-12/10 1/5-12/30 1/5-60/10 1/25-12/10 1/5-12/50 7/5-12/10 1/5-84/10 1/35-12/10 1/5-12/70
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