Solutions by everydaycalculation.com
1st number: 2 12/15, 2nd number: 1 6/15
4215 - 2115 is 75.
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Related: 84/15-21/15 42/15-42/15 42/30-21/15 42/15-21/30 42/15-63/15 42/45-21/15 42/15-21/45 42/75-21/15 42/15-21/75
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