Question 1147875
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<pre>

If the three consecutive integer numbers are (n-1), n and (n+1),

then your equation is


    (n-1) + n + (n+1) = 2*(n+1) + 18,   or

     3n               = 2*(n+1) + 18,

     3n               = 2n + 20

     3n - 2n          = 20

      n               = 20,


so the three integer numbers are 19, 20 and 21.            <U>ANSWER</U>
</pre>

You can check it on your own that my answer satisfies the condition.