Solutions by everydaycalculation.com
1st number: 4 1/5, 2nd number: 4 2/7
215 - 307 is -335.
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Related: 42/5-30/7 21/5-60/7 21/10-30/7 21/5-30/14 63/5-30/7 21/5-90/7 21/15-30/7 21/5-30/21 21/25-30/7 21/5-30/35 21/35-30/7 21/5-30/49
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