Solutions by everydaycalculation.com
1st number: 1 1/15, 2nd number: 4 3/15
1615 - 6315 is -4715.
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Related: 32/15-63/15 16/30-63/15 16/15-63/30 48/15-63/15 16/45-63/15 16/15-63/45 80/15-63/15 16/75-63/15 16/15-63/75
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