Question 856102
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Hi,
Let x represent the brother's age  &#8658;  (x-3) represents  Tyler's age 
Question States*** The sum of their ages is 11
  x + (x-3) = 11
   2x - 3 = 11
      2x = 14
       x = 7, the brother's age.  Tyler is 4 years old    {{{7-3 = 4}}}
CHECKING our answer***
  7 + 4 = 11
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