Solutions by everydaycalculation.com
1st number: 1 12/30, 2nd number: 21/30
4230 - 2130 is 710.
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Related: 84/30-21/30 42/30-42/30 42/60-21/30 42/30-21/60 42/30-63/30 42/90-21/30 42/30-21/90
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