1=3/3=( )/4=5/( )=( )/8=21/( )=( )/30 快回答啊

问题描述:

1=3/3=( )/4=5/( )=( )/8=21/( )=( )/30 快回答啊

1=3/3=( 4)/4=5/(5 )=(8 )/8=21/( 21)=( 30)/30