Solutions by everydaycalculation.com
1st number: 1 2/4, 2nd number: 1 8/10
64 - 1810 is -310.
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Related: 12/4-18/10 6/4-36/10 6/8-18/10 6/4-18/20 18/4-18/10 6/4-54/10 6/12-18/10 6/4-18/30 30/4-18/10 6/4-90/10 6/20-18/10 6/4-18/50 42/4-18/10 6/28-18/10 6/4-18/70
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