Solutions by everydaycalculation.com
1st number: 2/8, 2nd number: 1 2/10
28 - 1210 is -1920.
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Related: 4/8-12/10 2/8-24/10 2/16-12/10 2/8-12/20 6/8-12/10 2/8-36/10 2/24-12/10 2/8-12/30 10/8-12/10 2/8-60/10 2/40-12/10 2/8-12/50 14/8-12/10 2/8-84/10 2/56-12/10 2/8-12/70
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