Question 1169589
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Let turn on our common sense.


Z = W - 5 must be non-negative.


It means that W is at least 5.


In turn, it means that Y is at least 4   (since W = Y+1)


And since X = W + Y + Z, it implies that


    W = 5;  Y = 4;  Z = 0;  X = 9.


<U>ANSWER</U>.  The number is  WXYZ = 5940.
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