Solutions by everydaycalculation.com
1st number: 21/30, 2nd number: 4 4/6
2130 - 286 is -11930.
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Related: 42/30-28/6 21/30-56/6 21/60-28/6 21/30-28/12 63/30-28/6 21/30-84/6 21/90-28/6 21/30-28/18 21/30-28/30 21/30-28/42
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