Hi

The sum of two integers is 30

Let x and (30-x) represent the smaller and larger number respectively

Question states***

 2(30-x) = 5x -10

solving for x

  60 - 2x = 5x-10

     70 = 7x

      x = 10, the smaller number.  The larger number is 20.   (30-10)



CHECKING our Answer***

 40  = 50 - 10 

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