已知x:y:z=2:3:4,且x+z-y=36.求x+y+z的值
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已知x:y:z=2:3:4,且x+z-y=36.求x+y+z的值
![已知x:y:z=2:3:4,且x+z-y=36.求x+y+z的值](/uploads/image/z/17021919-39-9.jpg?t=%E5%B7%B2%E7%9F%A5x%3Ay%3Az%3D2%3A3%3A4%2C%E4%B8%94x%2Bz-y%3D36.%E6%B1%82x%2By%2Bz%E7%9A%84%E5%80%BC)
我的才是对的
设x=2k,y=3k,z=4k,
x+z-y=36
3k=36
k=12 x+y+z=9k=108
设x=2k,y=3k,z=4k,
x+z-y=36
3k=36
k=12 x+y+z=9k=108
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