Solutions by everydaycalculation.com
1st number: 10/20, 2nd number: 1 2/10
1020 - 1210 is -710.
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Related: 10/20-24/10 10/40-12/10 10/20-12/20 30/20-12/10 10/20-36/10 10/60-12/10 10/20-12/30 50/20-12/10 10/20-60/10 10/20-12/50 70/20-12/10 10/20-84/10 10/20-12/70
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