SOLUTION: If x+y=12, and y+z=11 and z+x=13, what is the average of x, y and z?

SOLUTION: If x+y=12, and y+z=11 and z+x=13, what is the average of x, y and z?

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Question 316955: If x+y=12, and y+z=11 and z+x=13, what is the average of x, y and z?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Add all the equations together,

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