Solutions by everydaycalculation.com
1st number: 2 4/30, 2nd number: 21/30
6430 - 2130 is 4330.
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Related: 64/30-42/30 64/60-21/30 64/30-21/60 64/30-63/30 64/90-21/30 64/30-21/90
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