Solutions by everydaycalculation.com
1st number: 3/10, 2nd number: 8 4/10
310 - 8410 is -8110.
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Related: 6/10-84/10 3/20-84/10 3/10-84/20 9/10-84/10 3/30-84/10 3/10-84/30 15/10-84/10 3/50-84/10 3/10-84/50 21/10-84/10 3/70-84/10 3/10-84/70
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