10=20/( );1=( )/5;3/8=( )/24=21/( ).急求!

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10=20/();1=()/5;3/8=()/24=21/().急求!10=20/();1=()/5;3/8=()/24=21/().急求!10=20/();1=()/5;3/8=()/24=21/(

10=20/( );1=( )/5;3/8=( )/24=21/( ).急求!
10=20/( );1=( )/5;3/8=( )/24=21/( ).急求!

10=20/( );1=( )/5;3/8=( )/24=21/( ).急求!
2,5,9,56