Question 842595
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Hi,
A  {{{highlight_green(x)}}}   7
B  {{{highlight_green(x+4)}}}   11
C {{{highlight_green(2(x+4))}}} 22
 A+ B + C=  40
  4x + 12 = 40
     4x = 28
      x = 7 
CHECKING our answer***
  7 + 11 + 22 = 40
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