Solutions by everydaycalculation.com
1st number: 1 6/10, 2nd number: 2 5/20
1610 - 4520 is -1320.
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Related: 32/10-45/20 16/10-90/20 16/20-45/20 16/10-45/40 48/10-45/20 16/30-45/20 16/10-45/60 80/10-45/20 16/50-45/20 16/70-45/20
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