已知14分之A=15分之B=17分之C=19分之D求:A:B=( ):( )A:C=( ):( )A;D=( ):( )B:A=( ):( )B:C=( ):( )B:D=( ):( )C:A=( ):( )C:B=( ):( )C:D=( ):( )D:A=( ):( )D:B=( ):( )D:C=( ):( )急!
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![已知14分之A=15分之B=17分之C=19分之D求:A:B=( ):( )A:C=( ):( )A;D=( ):( )B:A=( ):( )B:C=( ):( )B:D=( ):( )C:A=( ):( )C:B=( ):( )C:D=( ):( )D:A=( ):( )D:B=( ):( )D:C=( ):( )急!](/uploads/image/z/183339-27-9.jpg?t=%E5%B7%B2%E7%9F%A514%E5%88%86%E4%B9%8BA%3D15%E5%88%86%E4%B9%8BB%3D17%E5%88%86%E4%B9%8BC%3D19%E5%88%86%E4%B9%8BD%E6%B1%82%EF%BC%9AA%3AB%3D%28+%29%3A%28+%29A%3AC%3D%28+%29%3A%28+%29A%3BD%3D%28+%29%3A%28+%29B%3AA%3D%28+%29%3A%28+%29B%3AC%3D%28+%29%3A%28+%29B%3AD%3D%28+%29%3A%28+%29C%3AA%3D%28+%29%3A%28+%29C%3AB%3D%28+%29%3A%28+%29C%3AD%3D%28+%29%3A%28+%29D%3AA%3D%28+%29%3A%28+%29D%3AB%3D%28+%29%3A%28+%29D%3AC%3D%28+%29%3A%28+%29%E6%80%A5%21)
已知14分之A=15分之B=17分之C=19分之D求:A:B=( ):( )A:C=( ):( )A;D=( ):( )B:A=( ):( )B:C=( ):( )B:D=( ):( )C:A=( ):( )C:B=( ):( )C:D=( ):( )D:A=( ):( )D:B=( ):( )D:C=( ):( )急!
已知14分之A=15分之B=17分之C=19分之D
求:
A:B=( ):( )A:C=( ):( )A;D=( ):( )B:A=( ):( )B:C=( ):( )B:D=( ):( )C:A=( ):( )C:B=( ):( )C:D=( ):( )D:A=( ):( )D:B=( ):( )D:C=( ):( )急!
已知14分之A=15分之B=17分之C=19分之D求:A:B=( ):( )A:C=( ):( )A;D=( ):( )B:A=( ):( )B:C=( ):( )B:D=( ):( )C:A=( ):( )C:B=( ):( )C:D=( ):( )D:A=( ):( )D:B=( ):( )D:C=( ):( )急!
14分之A=15分之B=17分之C=19分之D
A/14=B/15=C/17=D/19
令A/14=B/15=C/17=D/19=k
所以A=14k,
B=15k
C=17k
D=19k
A:B=( 14):(15)
A:C=( 14):( 17)
A;D=( 14):(19 )
B:A=( 15):(14 )
B:C=( 15):( 17)
B:D=(15 ):(19 )
C:A=( 17):(14 )
C:B=( 17):( 15)
C:D=(17 ):(19 )
D:A=(19 ):(14 )
D:B=(19 ):( 15)
D:C=(19 ):(17 )
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