SOLUTION: If the average of three numbers is V. If one of the numbers is Z and another is Y, what is the remaining number?

SOLUTION: If the average of three numbers is V. If one of the numbers is Z and another is Y, what is the remaining number?

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Question 262810: If the average of three numbers is V. If one of the numbers is Z and another is Y, what is the remaining number?
Answer by drk(1908) (Show Source): You can put this solution on YOUR website!
Let X, Y, and Z be the 3 numbers. Ten we get

The remaining number is x.
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step 1 - multiply by 3 to get

step 2 - subtract y and z to get x as

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