Solutions by everydaycalculation.com
1st number: 3 3/8, 2nd number: 5 5/7
278 - 407 is -13156.
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Related: 54/8-40/7 27/8-80/7 27/16-40/7 27/8-40/14 81/8-40/7 27/24-40/7 27/8-40/21 27/40-40/7 27/8-40/35 27/56-40/7 27/8-40/49
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