Question 1177733
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<pre>

    hamburgers + cheeseburgers = 449


        h      +    (h - 51)   = 449


              2h               = 449 + 51

              2h               = 500

               h               = 500/2 = 250


<U>ANSWER</U>.  250 hamburgers  and  250-51 = 199  cheeseburgers.
</pre>

Solved.