Question 45738
Given, 
       y = 13 - 3x    ----- (1)
 2x + 9y = -8         ----- (2)

Substituting value of y in (2) from (1) we get
   2x+9(13-3x) = -8
=> 2x+117-27x  = -8
=> 117-25x     = -8
=> 117-25x-117 = -8-117  ;(adding -117 to both sides)
=>        -25x = -125
=>           x = 5       ;(multiplying both sides by 1/-25)                 

Substituting the value of x in (1) we get
      y = 13 - 3(5)
    =>y = 13 - 15
    =>y = -2 

So, Answer is x=5, y=-2