Question 749346
9x-3y=9, 

x+3y=11


adding both equations:


(9x-3y)+(x+3y)=9+11

9x +x = 20

10x=20

x=2



now using the 2nd equation


x+3y+11

2+3y=11

3y=9

y=3


solution: (2,3)




:)