<h5>If x+y=6, y+z=7 and z+x=9 what is the average of x,y and z?</h5>

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If x+y=6, y+z=7 and z+x=9 what is the average of x,y and z?

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If x+y=6, y+z=7 and z+x=9 what is the average of x,y and z?