Question 404596
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Hi
solving the linear system using substitution
y-5=x    y = x+5 
4x-y=4
4x - (x+5) = 4  |substituting for y
solving for x
  3x - 5  = 4
     3x = 9
      x = 3   y = 8   (x+5)

CHECKING our Answer***
y-5 = x   
8-5 = 3