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If x(x+y+z)=9, y(x+y+z)=16 and z(x+y+z)=...

If `x(x+y+z)=9, y(x+y+z)=16 and z(x+y+z)=144` then what is the value of x?

A

`9/5`

B

`9/7`

C

`9/13`

D

`16/13`

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