Solutions by everydaycalculation.com
1st number: 9/15, 2nd number: 3 9/15
915 - 5415 is -31.
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Related: 18/15-54/15 9/30-54/15 9/15-54/30 27/15-54/15 9/45-54/15 9/15-54/45 45/15-54/15 9/75-54/15 9/15-54/75 63/15-54/15
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