Solutions by everydaycalculation.com
1st number: 1/20, 2nd number: 4 0/10
120 - 4010 is -7920.
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Related: 2/20-40/10 1/20-80/10 1/40-40/10 1/20-40/20 3/20-40/10 1/60-40/10 1/20-40/30 5/20-40/10 1/20-40/50 7/20-40/10 1/20-40/70
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