用2,3,4,6,9,12这六个数字写出三个大小相等的分数,每个数字只用一次,你能想出几种填法? (   )=( )=(   )  (   )=(   )=(   )

问题描述:

用2,3,4,6,9,12这六个数字写出三个大小相等的分数,每个数字只用一次,你能想出几种填法?  (   )=(           )=(   )  (   )=(   )=(   )

用2,3,4,6,9,12这六个数字写出三个大小相等的分数,每个数字只用一次,能想出2种填法:(  3/9 )=( 2/6 )=( 4/12  )  (  9/3 )=( 6/2  )=( 12/4  )