Solutions by everydaycalculation.com
1st number: 3/10, 2nd number: 4 4/9
310 - 409 is -37390.
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Related: 6/10-40/9 3/10-80/9 3/20-40/9 3/10-40/18 9/10-40/9 3/30-40/9 3/10-40/27 15/10-40/9 3/50-40/9 3/10-40/45 21/10-40/9 3/70-40/9 3/10-40/63
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