The answer is: " 1/24 " .
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(2/3) − (5/8) = ?
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(2/3) = (?/24) ;
(2/3) = (2*8)/(3*8) = (16/24) ;
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(5/8) = (?/24) ;
(5/8) = (5*3)/(8*3) = (15/24) ;
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(2/3) − (5/8) = (16/24) − (15/24)
= (16−15) / 24 ;
= 1/24 .
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