Solutions by everydaycalculation.com
1st number: 4/10, 2nd number: 7 2/10
410 - 7210 is -345.
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Related: 8/10-72/10 4/20-72/10 4/10-72/20 12/10-72/10 4/30-72/10 4/10-72/30 20/10-72/10 4/50-72/10 4/10-72/50 28/10-72/10 4/70-72/10 4/10-72/70
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