Solutions by everydaycalculation.com
1st number: 1/60, 2nd number: 1 3/15
160 - 1815 is -7160.
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Related: 2/60-18/15 1/60-36/15 1/60-18/30 3/60-18/15 1/60-54/15 1/60-18/45 5/60-18/15 1/60-90/15 1/60-18/75 7/60-18/15
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