Solutions by everydaycalculation.com
1st number: 4/10, 2nd number: 1 2/10
410 - 1210 is -45.
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Related: 8/10-12/10 4/10-24/10 4/20-12/10 4/10-12/20 12/10-12/10 4/10-36/10 4/30-12/10 4/10-12/30 20/10-12/10 4/10-60/10 4/50-12/10 4/10-12/50 28/10-12/10 4/10-84/10 4/70-12/10 4/10-12/70
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