Solutions by everydaycalculation.com
1st number: 1 1/15, 2nd number: 3 0/15
1615 - 4515 is -2915.
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Related: 32/15-45/15 16/15-90/15 16/30-45/15 16/15-45/30 48/15-45/15 16/45-45/15 80/15-45/15 16/75-45/15 16/15-45/75
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