求值:x+3y分之x-2y,3x-5y=0
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求值:x+3y分之x-2y,3x-5y=0
![求值:x+3y分之x-2y,3x-5y=0](/uploads/image/z/7388489-65-9.jpg?t=%E6%B1%82%E5%80%BC%EF%BC%9Ax%2B3y%E5%88%86%E4%B9%8Bx-2y%2C3x-5y%3D0)
3x-5y=0
3x=5y
x/y=5/3
(x-2y)/(x+3y)
=(x/y-2y/y)/(x/y+3y/y)
=(x/y-2)/(x/y+3)
=(5/3-2)/(5/3+3)
=(-1/3)/(14/3)
=-1/3*3/14
=-1/14
3x=5y
x/y=5/3
(x-2y)/(x+3y)
=(x/y-2y/y)/(x/y+3y/y)
=(x/y-2)/(x/y+3)
=(5/3-2)/(5/3+3)
=(-1/3)/(14/3)
=-1/3*3/14
=-1/14
求值:x+3y分之x-2y,3x-5y=0
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