Solutions by everydaycalculation.com
1st number: 21/30, 2nd number: 2 4/6
2130 - 166 is -5930.
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Related: 42/30-16/6 21/30-32/6 21/60-16/6 21/30-16/12 63/30-16/6 21/30-48/6 21/90-16/6 21/30-16/18 21/30-80/6 21/30-16/30 21/30-16/42
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