1.若2x-3y=0,则x+y/x-y(是个分数额)=( )A.-5 B.5 C.±5 D.42.若x-2y/3y-x=2/3,则y:x等于( )A.5/12 B.12/5 C.-5/12 D.-12/53.若4x=7y+5z,2x+y=z,则x:y:z的值为( )A.2:1:(-1) B.2:1:3 C.2:(-1):3 D.3:2:1
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![1.若2x-3y=0,则x+y/x-y(是个分数额)=( )A.-5 B.5 C.±5 D.42.若x-2y/3y-x=2/3,则y:x等于( )A.5/12 B.12/5 C.-5/12 D.-12/53.若4x=7y+5z,2x+y=z,则x:y:z的值为( )A.2:1:(-1) B.2:1:3 C.2:(-1):3 D.3:2:1](/uploads/image/z/1167102-54-2.jpg?t=1.%E8%8B%A52x-3y%3D0%2C%E5%88%99x%2By%2Fx-y%28%E6%98%AF%E4%B8%AA%E5%88%86%E6%95%B0%E9%A2%9D%29%3D%28+%29A.-5+B.5+C.%C2%B15+D.42.%E8%8B%A5x-2y%2F3y-x%3D2%2F3%2C%E5%88%99y%EF%BC%9Ax%E7%AD%89%E4%BA%8E%28+%29A.5%2F12+B.12%2F5+C.-5%2F12+D.-12%2F53.%E8%8B%A54x%3D7y%2B5z%2C2x%2By%3Dz%2C%E5%88%99x%EF%BC%9Ay%EF%BC%9Az%E7%9A%84%E5%80%BC%E4%B8%BA%28+%29A.2%3A1%3A%28-1%29+B.2%3A1%3A3+C.2%3A%28-1%29%3A3+D.3%3A2%3A1)
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