Solutions by everydaycalculation.com
1st number: 4/5, 2nd number: 2 9/20
45 - 4920 is -3320.
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Related: 8/5-49/20 4/5-98/20 4/10-49/20 4/5-49/40 12/5-49/20 4/15-49/20 4/5-49/60 20/5-49/20 4/25-49/20 28/5-49/20 4/35-49/20
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